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Finding the Fourth Proportional to 487,140.48, 730,723.68 and 171,525.60

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Solution

The fourth proportional to 487,140.48, 730,723.68 and 171,525.60 is: 257,292.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,140.48 : 730,723.68 = 171,525.60 : x
  2. Step 2: Convert to fraction form
    487,140.48/730,723.68 = 171,525.60/x
  3. Step 3: Cross multiply
    487,140.48x = 730,723.68 × 171,525.60
  4. Step 4: Simplify right side
    487,140.48x = 125,337,817,646.21
  5. Step 5: Solve for x
    x = 125,337,817,646.21/487,140.48
  6. Step 6: Final answer
    x = 257,292.96

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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.