Home / 280,861,434.40-421,293,463.80-99,108,612.40

Finding the Fourth Proportional to 280,861,434.40, 421,293,463.80 and 99,108,612.40

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Solution

The fourth proportional to 280,861,434.40, 421,293,463.80 and 99,108,612.40 is: 148,663,381.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,861,434.40 : 421,293,463.80 = 99,108,612.40 : x
  2. Step 2: Convert to fraction form
    280,861,434.40/421,293,463.80 = 99,108,612.40/x
  3. Step 3: Cross multiply
    280,861,434.40x = 421,293,463.80 × 99,108,612.40
  4. Step 4: Simplify right side
    280,861,434.40x = 41,753,810,610,407,632
  5. Step 5: Solve for x
    x = 41,753,810,610,407,632/280,861,434.40
  6. Step 6: Final answer
    x = 148,663,381.64

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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.