Home / 438,106.20-657,332.10-171,821.40

Finding the Fourth Proportional to 438,106.20, 657,332.10 and 171,821.40

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Solution

The fourth proportional to 438,106.20, 657,332.10 and 171,821.40 is: 257,799.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,106.20 : 657,332.10 = 171,821.40 : x
  2. Step 2: Convert to fraction form
    438,106.20/657,332.10 = 171,821.40/x
  3. Step 3: Cross multiply
    438,106.20x = 657,332.10 × 171,821.40
  4. Step 4: Simplify right side
    438,106.20x = 112,943,721,686.94
  5. Step 5: Solve for x
    x = 112,943,721,686.94/438,106.20
  6. Step 6: Final answer
    x = 257,799.87

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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.