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Finding the Fourth Proportional to 487,071.60, 672,153.56 and 269,279.34

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Solution

The fourth proportional to 487,071.60, 672,153.56 and 269,279.34 is: 371,602.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,071.60 : 672,153.56 = 269,279.34 : x
  2. Step 2: Convert to fraction form
    487,071.60/672,153.56 = 269,279.34/x
  3. Step 3: Cross multiply
    487,071.60x = 672,153.56 × 269,279.34
  4. Step 4: Simplify right side
    487,071.60x = 180,997,067,015.45
  5. Step 5: Solve for x
    x = 180,997,067,015.45/487,071.60
  6. Step 6: Final answer
    x = 371,602.59

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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.