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Finding the Fourth Proportional to 660,359.52, 990,541.70 and 161,723.52

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Solution

The fourth proportional to 660,359.52, 990,541.70 and 161,723.52 is: 242,585.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,359.52 : 990,541.70 = 161,723.52 : x
  2. Step 2: Convert to fraction form
    660,359.52/990,541.70 = 161,723.52/x
  3. Step 3: Cross multiply
    660,359.52x = 990,541.70 × 161,723.52
  4. Step 4: Simplify right side
    660,359.52x = 160,193,890,430.78
  5. Step 5: Solve for x
    x = 160,193,890,430.78/660,359.52
  6. Step 6: Final answer
    x = 242,585.87

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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.