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Finding the Fourth Proportional to 458,625.40, 688,047.45 and 221,773.30

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Solution

The fourth proportional to 458,625.40, 688,047.45 and 221,773.30 is: 332,712.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,625.40 : 688,047.45 = 221,773.30 : x
  2. Step 2: Convert to fraction form
    458,625.40/688,047.45 = 221,773.30/x
  3. Step 3: Cross multiply
    458,625.40x = 688,047.45 × 221,773.30
  4. Step 4: Simplify right side
    458,625.40x = 152,590,553,543.09
  5. Step 5: Solve for x
    x = 152,590,553,543.09/458,625.40
  6. Step 6: Final answer
    x = 332,712.83

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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.