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Finding the Fourth Proportional to 666,980.10, 1,000,472.52 and 161,541.42

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Solution

The fourth proportional to 666,980.10, 1,000,472.52 and 161,541.42 is: 242,312.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,980.10 : 1,000,472.52 = 161,541.42 : x
  2. Step 2: Convert to fraction form
    666,980.10/1,000,472.52 = 161,541.42/x
  3. Step 3: Cross multiply
    666,980.10x = 1,000,472.52 × 161,541.42
  4. Step 4: Simplify right side
    666,980.10x = 161,617,751,551.78
  5. Step 5: Solve for x
    x = 161,617,751,551.78/666,980.10
  6. Step 6: Final answer
    x = 242,312.70

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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.