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Finding the Fourth Proportional to 351,655.68, 485,320.32 and 208,439.04

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Solution

The fourth proportional to 351,655.68, 485,320.32 and 208,439.04 is: 287,666.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,655.68 : 485,320.32 = 208,439.04 : x
  2. Step 2: Convert to fraction form
    351,655.68/485,320.32 = 208,439.04/x
  3. Step 3: Cross multiply
    351,655.68x = 485,320.32 × 208,439.04
  4. Step 4: Simplify right side
    351,655.68x = 101,159,701,593.29
  5. Step 5: Solve for x
    x = 101,159,701,593.29/351,655.68
  6. Step 6: Final answer
    x = 287,666.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.