Home / 288,689.40-433,083.78-99,140.76

Finding the Fourth Proportional to 288,689.40, 433,083.78 and 99,140.76

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Solution

The fourth proportional to 288,689.40, 433,083.78 and 99,140.76 is: 148,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,689.40 : 433,083.78 = 99,140.76 : x
  2. Step 2: Convert to fraction form
    288,689.40/433,083.78 = 99,140.76/x
  3. Step 3: Cross multiply
    288,689.40x = 433,083.78 × 99,140.76
  4. Step 4: Simplify right side
    288,689.40x = 42,936,255,092.87
  5. Step 5: Solve for x
    x = 42,936,255,092.87/288,689.40
  6. Step 6: Final answer
    x = 148,728.20

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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.