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Finding the Fourth Proportional to 487,113.38, 672,195.33 and 266,346.64

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Solution

The fourth proportional to 487,113.38, 672,195.33 and 266,346.64 is: 367,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,113.38 : 672,195.33 = 266,346.64 : x
  2. Step 2: Convert to fraction form
    487,113.38/672,195.33 = 266,346.64/x
  3. Step 3: Cross multiply
    487,113.38x = 672,195.33 × 266,346.64
  4. Step 4: Simplify right side
    487,113.38x = 179,036,967,569.19
  5. Step 5: Solve for x
    x = 179,036,967,569.19/487,113.38
  6. Step 6: Final answer
    x = 367,546.81

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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.