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Finding the Fourth Proportional to 402,390.92, 603,539.22 and 136,150.64

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Solution

The fourth proportional to 402,390.92, 603,539.22 and 136,150.64 is: 204,210.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,390.92 : 603,539.22 = 136,150.64 : x
  2. Step 2: Convert to fraction form
    402,390.92/603,539.22 = 136,150.64/x
  3. Step 3: Cross multiply
    402,390.92x = 603,539.22 × 136,150.64
  4. Step 4: Simplify right side
    402,390.92x = 82,172,251,068.10
  5. Step 5: Solve for x
    x = 82,172,251,068.10/402,390.92
  6. Step 6: Final answer
    x = 204,210.00

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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.