Home / 487,042.14-672,120.65-272,185.80

Finding the Fourth Proportional to 487,042.14, 672,120.65 and 272,185.80

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Solution

The fourth proportional to 487,042.14, 672,120.65 and 272,185.80 is: 375,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,042.14 : 672,120.65 = 272,185.80 : x
  2. Step 2: Convert to fraction form
    487,042.14/672,120.65 = 272,185.80/x
  3. Step 3: Cross multiply
    487,042.14x = 672,120.65 × 272,185.80
  4. Step 4: Simplify right side
    487,042.14x = 182,941,695,455.84
  5. Step 5: Solve for x
    x = 182,941,695,455.84/487,042.14
  6. Step 6: Final answer
    x = 375,617.80

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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.