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Finding the Fourth Proportional to 238,355.70, 357,360.15 and 111,930.78

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Solution

The fourth proportional to 238,355.70, 357,360.15 and 111,930.78 is: 167,814.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,355.70 : 357,360.15 = 111,930.78 : x
  2. Step 2: Convert to fraction form
    238,355.70/357,360.15 = 111,930.78/x
  3. Step 3: Cross multiply
    238,355.70x = 357,360.15 × 111,930.78
  4. Step 4: Simplify right side
    238,355.70x = 39,999,600,330.42
  5. Step 5: Solve for x
    x = 39,999,600,330.42/238,355.70
  6. Step 6: Final answer
    x = 167,814.74

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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.