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Finding the Fourth Proportional to 458,473.80, 687,710.70 and 221,840.40

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Solution

The fourth proportional to 458,473.80, 687,710.70 and 221,840.40 is: 332,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,473.80 : 687,710.70 = 221,840.40 : x
  2. Step 2: Convert to fraction form
    458,473.80/687,710.70 = 221,840.40/x
  3. Step 3: Cross multiply
    458,473.80x = 687,710.70 × 221,840.40
  4. Step 4: Simplify right side
    458,473.80x = 152,562,016,772.28
  5. Step 5: Solve for x
    x = 152,562,016,772.28/458,473.80
  6. Step 6: Final answer
    x = 332,760.60

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Similar ratio
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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.