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Finding the Fourth Proportional to 238,952.71, 358,343.69 and 78,999.12

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Solution

The fourth proportional to 238,952.71, 358,343.69 and 78,999.12 is: 118,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,952.71 : 358,343.69 = 78,999.12 : x
  2. Step 2: Convert to fraction form
    238,952.71/358,343.69 = 78,999.12/x
  3. Step 3: Cross multiply
    238,952.71x = 358,343.69 × 78,999.12
  4. Step 4: Simplify right side
    238,952.71x = 28,308,836,167.55
  5. Step 5: Solve for x
    x = 28,308,836,167.55/238,952.71
  6. Step 6: Final answer
    x = 118,470.45

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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.