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Finding the Fourth Proportional to 665,034.80, 997,357.80 and 238,521.20

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Solution

The fourth proportional to 665,034.80, 997,357.80 and 238,521.20 is: 357,712.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,034.80 : 997,357.80 = 238,521.20 : x
  2. Step 2: Convert to fraction form
    665,034.80/997,357.80 = 238,521.20/x
  3. Step 3: Cross multiply
    665,034.80x = 997,357.80 × 238,521.20
  4. Step 4: Simplify right side
    665,034.80x = 237,890,979,285.36
  5. Step 5: Solve for x
    x = 237,890,979,285.36/665,034.80
  6. Step 6: Final answer
    x = 357,712.08

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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.