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Finding the Fourth Proportional to 156,695.20, 235,042.80 and 154,362.40

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Solution

The fourth proportional to 156,695.20, 235,042.80 and 154,362.40 is: 231,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,695.20 : 235,042.80 = 154,362.40 : x
  2. Step 2: Convert to fraction form
    156,695.20/235,042.80 = 154,362.40/x
  3. Step 3: Cross multiply
    156,695.20x = 235,042.80 × 154,362.40
  4. Step 4: Simplify right side
    156,695.20x = 36,281,770,710.72
  5. Step 5: Solve for x
    x = 36,281,770,710.72/156,695.20
  6. Step 6: Final answer
    x = 231,543.60

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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.