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Finding the Fourth Proportional to 488,038.80, 731,712.60 and 188,403.60

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Solution

The fourth proportional to 488,038.80, 731,712.60 and 188,403.60 is: 282,471.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,038.80 : 731,712.60 = 188,403.60 : x
  2. Step 2: Convert to fraction form
    488,038.80/731,712.60 = 188,403.60/x
  3. Step 3: Cross multiply
    488,038.80x = 731,712.60 × 188,403.60
  4. Step 4: Simplify right side
    488,038.80x = 137,857,288,005.36
  5. Step 5: Solve for x
    x = 137,857,288,005.36/488,038.80
  6. Step 6: Final answer
    x = 282,471.98

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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.