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Finding the Fourth Proportional to 402,851.20, 603,547.80 and 192,024.40

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Solution

The fourth proportional to 402,851.20, 603,547.80 and 192,024.40 is: 287,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,851.20 : 603,547.80 = 192,024.40 : x
  2. Step 2: Convert to fraction form
    402,851.20/603,547.80 = 192,024.40/x
  3. Step 3: Cross multiply
    402,851.20x = 603,547.80 × 192,024.40
  4. Step 4: Simplify right side
    402,851.20x = 115,895,904,166.32
  5. Step 5: Solve for x
    x = 115,895,904,166.32/402,851.20
  6. Step 6: Final answer
    x = 287,689.11

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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.