Home / 431,861.12-647,666.40-165,602.24

Finding the Fourth Proportional to 431,861.12, 647,666.40 and 165,602.24

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Solution

The fourth proportional to 431,861.12, 647,666.40 and 165,602.24 is: 248,355.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,861.12 : 647,666.40 = 165,602.24 : x
  2. Step 2: Convert to fraction form
    431,861.12/647,666.40 = 165,602.24/x
  3. Step 3: Cross multiply
    431,861.12x = 647,666.40 × 165,602.24
  4. Step 4: Simplify right side
    431,861.12x = 107,255,006,612.74
  5. Step 5: Solve for x
    x = 107,255,006,612.74/431,861.12
  6. Step 6: Final answer
    x = 248,355.32

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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.