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Finding the Fourth Proportional to 238,539.34, 357,853.34 and 78,626.50

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Solution

The fourth proportional to 238,539.34, 357,853.34 and 78,626.50 is: 117,954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,539.34 : 357,853.34 = 78,626.50 : x
  2. Step 2: Convert to fraction form
    238,539.34/357,853.34 = 78,626.50/x
  3. Step 3: Cross multiply
    238,539.34x = 357,853.34 × 78,626.50
  4. Step 4: Simplify right side
    238,539.34x = 28,136,755,795.03
  5. Step 5: Solve for x
    x = 28,136,755,795.03/238,539.34
  6. Step 6: Final answer
    x = 117,954.36

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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.