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Finding the Fourth Proportional to 438,048.44, 657,153.68 and 138,604.40

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Solution

The fourth proportional to 438,048.44, 657,153.68 and 138,604.40 is: 207,932.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,048.44 : 657,153.68 = 138,604.40 : x
  2. Step 2: Convert to fraction form
    438,048.44/657,153.68 = 138,604.40/x
  3. Step 3: Cross multiply
    438,048.44x = 657,153.68 × 138,604.40
  4. Step 4: Simplify right side
    438,048.44x = 91,084,391,524.19
  5. Step 5: Solve for x
    x = 91,084,391,524.19/438,048.44
  6. Step 6: Final answer
    x = 207,932.24

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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.