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Finding the Fourth Proportional to 487,613.34, 672,874.74 and 272,716.20

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Solution

The fourth proportional to 487,613.34, 672,874.74 and 272,716.20 is: 376,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,613.34 : 672,874.74 = 272,716.20 : x
  2. Step 2: Convert to fraction form
    487,613.34/672,874.74 = 272,716.20/x
  3. Step 3: Cross multiply
    487,613.34x = 672,874.74 × 272,716.20
  4. Step 4: Simplify right side
    487,613.34x = 183,503,842,168.79
  5. Step 5: Solve for x
    x = 183,503,842,168.79/487,613.34
  6. Step 6: Final answer
    x = 376,330.64

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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.