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Finding the Fourth Proportional to 487,336.40, 731,004.60 and 171,825.20

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Solution

The fourth proportional to 487,336.40, 731,004.60 and 171,825.20 is: 257,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,336.40 : 731,004.60 = 171,825.20 : x
  2. Step 2: Convert to fraction form
    487,336.40/731,004.60 = 171,825.20/x
  3. Step 3: Cross multiply
    487,336.40x = 731,004.60 × 171,825.20
  4. Step 4: Simplify right side
    487,336.40x = 125,605,011,595.92
  5. Step 5: Solve for x
    x = 125,605,011,595.92/487,336.40
  6. Step 6: Final answer
    x = 257,737.80

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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.