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Finding the Fourth Proportional to 238,660.65, 357,914.48 and 78,700.68

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Solution

The fourth proportional to 238,660.65, 357,914.48 and 78,700.68 is: 118,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,660.65 : 357,914.48 = 78,700.68 : x
  2. Step 2: Convert to fraction form
    238,660.65/357,914.48 = 78,700.68/x
  3. Step 3: Cross multiply
    238,660.65x = 357,914.48 × 78,700.68
  4. Step 4: Simplify right side
    238,660.65x = 28,168,112,564.34
  5. Step 5: Solve for x
    x = 28,168,112,564.34/238,660.65
  6. Step 6: Final answer
    x = 118,025.79

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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.