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Finding the Fourth Proportional to 402,072.15, 601,600.78 and 239,371.08

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Solution

The fourth proportional to 402,072.15, 601,600.78 and 239,371.08 is: 358,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,072.15 : 601,600.78 = 239,371.08 : x
  2. Step 2: Convert to fraction form
    402,072.15/601,600.78 = 239,371.08/x
  3. Step 3: Cross multiply
    402,072.15x = 601,600.78 × 239,371.08
  4. Step 4: Simplify right side
    402,072.15x = 144,005,827,240.59
  5. Step 5: Solve for x
    x = 144,005,827,240.59/402,072.15
  6. Step 6: Final answer
    x = 358,159.17

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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.