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Finding the Fourth Proportional to 154,978.25, 232,245.40 and 88,280.67

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Solution

The fourth proportional to 154,978.25, 232,245.40 and 88,280.67 is: 132,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,978.25 : 232,245.40 = 88,280.67 : x
  2. Step 2: Convert to fraction form
    154,978.25/232,245.40 = 88,280.67/x
  3. Step 3: Cross multiply
    154,978.25x = 232,245.40 × 88,280.67
  4. Step 4: Simplify right side
    154,978.25x = 20,502,779,516.42
  5. Step 5: Solve for x
    x = 20,502,779,516.42/154,978.25
  6. Step 6: Final answer
    x = 132,294.56

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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.