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Finding the Fourth Proportional to 487,514.64, 672,762.96 and 272,652.72

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Solution

The fourth proportional to 487,514.64, 672,762.96 and 272,652.72 is: 376,256.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,514.64 : 672,762.96 = 272,652.72 : x
  2. Step 2: Convert to fraction form
    487,514.64/672,762.96 = 272,652.72/x
  3. Step 3: Cross multiply
    487,514.64x = 672,762.96 × 272,652.72
  4. Step 4: Simplify right side
    487,514.64x = 183,430,650,959.25
  5. Step 5: Solve for x
    x = 183,430,650,959.25/487,514.64
  6. Step 6: Final answer
    x = 376,256.70

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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.