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Finding the Fourth Proportional to 445,705.20, 615,115.17 and 254,681.46

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Solution

The fourth proportional to 445,705.20, 615,115.17 and 254,681.46 is: 351,484.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,705.20 : 615,115.17 = 254,681.46 : x
  2. Step 2: Convert to fraction form
    445,705.20/615,115.17 = 254,681.46/x
  3. Step 3: Cross multiply
    445,705.20x = 615,115.17 × 254,681.46
  4. Step 4: Simplify right side
    445,705.20x = 156,658,429,563.75
  5. Step 5: Solve for x
    x = 156,658,429,563.75/445,705.20
  6. Step 6: Final answer
    x = 351,484.41

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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.