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Finding the Fourth Proportional to 213,339.52, 319,996.24 and 88,681.60

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Solution

The fourth proportional to 213,339.52, 319,996.24 and 88,681.60 is: 133,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,339.52 : 319,996.24 = 88,681.60 : x
  2. Step 2: Convert to fraction form
    213,339.52/319,996.24 = 88,681.60/x
  3. Step 3: Cross multiply
    213,339.52x = 319,996.24 × 88,681.60
  4. Step 4: Simplify right side
    213,339.52x = 28,377,778,557.18
  5. Step 5: Solve for x
    x = 28,377,778,557.18/213,339.52
  6. Step 6: Final answer
    x = 133,016.98

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1.5x scale

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.