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Finding the Fourth Proportional to 285,562.40, 428,344.56 and 72,330.24

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Solution

The fourth proportional to 285,562.40, 428,344.56 and 72,330.24 is: 108,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,562.40 : 428,344.56 = 72,330.24 : x
  2. Step 2: Convert to fraction form
    285,562.40/428,344.56 = 72,330.24/x
  3. Step 3: Cross multiply
    285,562.40x = 428,344.56 × 72,330.24
  4. Step 4: Simplify right side
    285,562.40x = 30,982,264,827.49
  5. Step 5: Solve for x
    x = 30,982,264,827.49/285,562.40
  6. Step 6: Final answer
    x = 108,495.60

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1.5x scale

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.