Home / 487,018.90-672,084.11-272,158.90

Finding the Fourth Proportional to 487,018.90, 672,084.11 and 272,158.90

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Solution

The fourth proportional to 487,018.90, 672,084.11 and 272,158.90 is: 375,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,018.90 : 672,084.11 = 272,158.90 : x
  2. Step 2: Convert to fraction form
    487,018.90/672,084.11 = 272,158.90/x
  3. Step 3: Cross multiply
    487,018.90x = 672,084.11 × 272,158.90
  4. Step 4: Simplify right side
    487,018.90x = 182,913,672,085.08
  5. Step 5: Solve for x
    x = 182,913,672,085.08/487,018.90
  6. Step 6: Final answer
    x = 375,578.18

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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.