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Finding the Fourth Proportional to 487,148.85, 672,238.26 and 269,344.89

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Solution

The fourth proportional to 487,148.85, 672,238.26 and 269,344.89 is: 371,680.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,148.85 : 672,238.26 = 269,344.89 : x
  2. Step 2: Convert to fraction form
    487,148.85/672,238.26 = 269,344.89/x
  3. Step 3: Cross multiply
    487,148.85x = 672,238.26 × 269,344.89
  4. Step 4: Simplify right side
    487,148.85x = 181,063,940,193.49
  5. Step 5: Solve for x
    x = 181,063,940,193.49/487,148.85
  6. Step 6: Final answer
    x = 371,680.94

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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.