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Finding the Fourth Proportional to 159,311.80, 238,967.70 and 156,201.40

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Solution

The fourth proportional to 159,311.80, 238,967.70 and 156,201.40 is: 234,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,311.80 : 238,967.70 = 156,201.40 : x
  2. Step 2: Convert to fraction form
    159,311.80/238,967.70 = 156,201.40/x
  3. Step 3: Cross multiply
    159,311.80x = 238,967.70 × 156,201.40
  4. Step 4: Simplify right side
    159,311.80x = 37,327,089,294.78
  5. Step 5: Solve for x
    x = 37,327,089,294.78/159,311.80
  6. Step 6: Final answer
    x = 234,302.10

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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.