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Finding the Fourth Proportional to 487,338.40, 731,007.60 and 171,827.20

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Solution

The fourth proportional to 487,338.40, 731,007.60 and 171,827.20 is: 257,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,338.40 : 731,007.60 = 171,827.20 : x
  2. Step 2: Convert to fraction form
    487,338.40/731,007.60 = 171,827.20/x
  3. Step 3: Cross multiply
    487,338.40x = 731,007.60 × 171,827.20
  4. Step 4: Simplify right side
    487,338.40x = 125,606,989,086.72
  5. Step 5: Solve for x
    x = 125,606,989,086.72/487,338.40
  6. Step 6: Final answer
    x = 257,740.80

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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.