Home / 487,075.20-672,171.39-272,229.18

Finding the Fourth Proportional to 487,075.20, 672,171.39 and 272,229.18

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Solution

The fourth proportional to 487,075.20, 672,171.39 and 272,229.18 is: 375,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,075.20 : 672,171.39 = 272,229.18 : x
  2. Step 2: Convert to fraction form
    487,075.20/672,171.39 = 272,229.18/x
  3. Step 3: Cross multiply
    487,075.20x = 672,171.39 × 272,229.18
  4. Step 4: Simplify right side
    487,075.20x = 182,984,666,319.16
  5. Step 5: Solve for x
    x = 182,984,666,319.16/487,075.20
  6. Step 6: Final answer
    x = 375,680.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.