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Finding the Fourth Proportional to 238,948.74, 358,337.79 and 78,995.34

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Solution

The fourth proportional to 238,948.74, 358,337.79 and 78,995.34 is: 118,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,948.74 : 358,337.79 = 78,995.34 : x
  2. Step 2: Convert to fraction form
    238,948.74/358,337.79 = 78,995.34/x
  3. Step 3: Cross multiply
    238,948.74x = 358,337.79 × 78,995.34
  4. Step 4: Simplify right side
    238,948.74x = 28,307,015,555.90
  5. Step 5: Solve for x
    x = 28,307,015,555.90/238,948.74
  6. Step 6: Final answer
    x = 118,464.80

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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.