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Finding the Fourth Proportional to 238,488.66, 357,778.62 and 78,610.74

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Solution

The fourth proportional to 238,488.66, 357,778.62 and 78,610.74 is: 117,931.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,488.66 : 357,778.62 = 78,610.74 : x
  2. Step 2: Convert to fraction form
    238,488.66/357,778.62 = 78,610.74/x
  3. Step 3: Cross multiply
    238,488.66x = 357,778.62 × 78,610.74
  4. Step 4: Simplify right side
    238,488.66x = 28,125,242,074.38
  5. Step 5: Solve for x
    x = 28,125,242,074.38/238,488.66
  6. Step 6: Final answer
    x = 117,931.15

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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.