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Finding the Fourth Proportional to 238,987.67, 358,535.50 and 79,063.21

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Solution

The fourth proportional to 238,987.67, 358,535.50 and 79,063.21 is: 118,612.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,987.67 : 358,535.50 = 79,063.21 : x
  2. Step 2: Convert to fraction form
    238,987.67/358,535.50 = 79,063.21/x
  3. Step 3: Cross multiply
    238,987.67x = 358,535.50 × 79,063.21
  4. Step 4: Simplify right side
    238,987.67x = 28,346,967,779.47
  5. Step 5: Solve for x
    x = 28,346,967,779.47/238,987.67
  6. Step 6: Final answer
    x = 118,612.68

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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.