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Finding the Fourth Proportional to 438,627.70, 657,941.55 and 252,003.70

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Solution

The fourth proportional to 438,627.70, 657,941.55 and 252,003.70 is: 378,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,627.70 : 657,941.55 = 252,003.70 : x
  2. Step 2: Convert to fraction form
    438,627.70/657,941.55 = 252,003.70/x
  3. Step 3: Cross multiply
    438,627.70x = 657,941.55 × 252,003.70
  4. Step 4: Simplify right side
    438,627.70x = 165,803,704,983.74
  5. Step 5: Solve for x
    x = 165,803,704,983.74/438,627.70
  6. Step 6: Final answer
    x = 378,005.55

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1.5x scale

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.