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Finding the Fourth Proportional to 399,039.92, 595,640.38 and 351,802.16

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Solution

The fourth proportional to 399,039.92, 595,640.38 and 351,802.16 is: 525,129.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,039.92 : 595,640.38 = 351,802.16 : x
  2. Step 2: Convert to fraction form
    399,039.92/595,640.38 = 351,802.16/x
  3. Step 3: Cross multiply
    399,039.92x = 595,640.38 × 351,802.16
  4. Step 4: Simplify right side
    399,039.92x = 209,547,572,267.22
  5. Step 5: Solve for x
    x = 209,547,572,267.22/399,039.92
  6. Step 6: Final answer
    x = 525,129.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.