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Finding the Fourth Proportional to 481,502.40, 721,562.40 and 354,148.80

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Solution

The fourth proportional to 481,502.40, 721,562.40 and 354,148.80 is: 530,714.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,502.40 : 721,562.40 = 354,148.80 : x
  2. Step 2: Convert to fraction form
    481,502.40/721,562.40 = 354,148.80/x
  3. Step 3: Cross multiply
    481,502.40x = 721,562.40 × 354,148.80
  4. Step 4: Simplify right side
    481,502.40x = 255,540,458,085.12
  5. Step 5: Solve for x
    x = 255,540,458,085.12/481,502.40
  6. Step 6: Final answer
    x = 530,714.82

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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.