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Finding the Fourth Proportional to 438,330.70, 657,496.05 and 251,706.70

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Solution

The fourth proportional to 438,330.70, 657,496.05 and 251,706.70 is: 377,560.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,330.70 : 657,496.05 = 251,706.70 : x
  2. Step 2: Convert to fraction form
    438,330.70/657,496.05 = 251,706.70/x
  3. Step 3: Cross multiply
    438,330.70x = 657,496.05 × 251,706.70
  4. Step 4: Simplify right side
    438,330.70x = 165,496,161,008.54
  5. Step 5: Solve for x
    x = 165,496,161,008.54/438,330.70
  6. Step 6: Final answer
    x = 377,560.05

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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.