Home / 487,020.89-672,086.86-272,160.91

Finding the Fourth Proportional to 487,020.89, 672,086.86 and 272,160.91

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Solution

The fourth proportional to 487,020.89, 672,086.86 and 272,160.91 is: 375,580.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,020.89 : 672,086.86 = 272,160.91 : x
  2. Step 2: Convert to fraction form
    487,020.89/672,086.86 = 272,160.91/x
  3. Step 3: Cross multiply
    487,020.89x = 672,086.86 × 272,160.91
  4. Step 4: Simplify right side
    487,020.89x = 182,915,771,416.64
  5. Step 5: Solve for x
    x = 182,915,771,416.64/487,020.89
  6. Step 6: Final answer
    x = 375,580.96

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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.