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Finding the Fourth Proportional to 487,548.70, 672,762.84 and 272,684.46

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Solution

The fourth proportional to 487,548.70, 672,762.84 and 272,684.46 is: 376,274.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,548.70 : 672,762.84 = 272,684.46 : x
  2. Step 2: Convert to fraction form
    487,548.70/672,762.84 = 272,684.46/x
  3. Step 3: Cross multiply
    487,548.70x = 672,762.84 × 272,684.46
  4. Step 4: Simplify right side
    487,548.70x = 183,451,971,733.47
  5. Step 5: Solve for x
    x = 183,451,971,733.47/487,548.70
  6. Step 6: Final answer
    x = 376,274.15

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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.