Home / 487,018.85-672,073.47-272,160.68

Finding the Fourth Proportional to 487,018.85, 672,073.47 and 272,160.68

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Solution

The fourth proportional to 487,018.85, 672,073.47 and 272,160.68 is: 375,574.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,018.85 : 672,073.47 = 272,160.68 : x
  2. Step 2: Convert to fraction form
    487,018.85/672,073.47 = 272,160.68/x
  3. Step 3: Cross multiply
    487,018.85x = 672,073.47 × 272,160.68
  4. Step 4: Simplify right side
    487,018.85x = 182,911,969,244.79
  5. Step 5: Solve for x
    x = 182,911,969,244.79/487,018.85
  6. Step 6: Final answer
    x = 375,574.73

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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.