Home / 279,996,812,728.40-420,013,944,115.32-98,457,957,140.56

Finding the Fourth Proportional to 279,996,812,728.40, 420,013,944,115.32 and 98,457,957,140.56

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Solution

The fourth proportional to 279,996,812,728.40, 420,013,944,115.32 and 98,457,957,140.56 is: 147,693,520,169.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,996,812,728.40 : 420,013,944,115.32 = 98,457,957,140.56 : x
  2. Step 2: Convert to fraction form
    279,996,812,728.40/420,013,944,115.32 = 98,457,957,140.56/x
  3. Step 3: Cross multiply
    279,996,812,728.40x = 420,013,944,115.32 × 98,457,957,140.56
  4. Step 4: Simplify right side
    279,996,812,728.40x = 41,353,714,908,143,737,110,528
  5. Step 5: Solve for x
    x = 41,353,714,908,143,737,110,528/279,996,812,728.40
  6. Step 6: Final answer
    x = 147,693,520,169.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.