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Finding the Fourth Proportional to 498,240, 687,585.80 and 271,900.08

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Solution

The fourth proportional to 498,240, 687,585.80 and 271,900.08 is: 375,230.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,240 : 687,585.80 = 271,900.08 : x
  2. Step 2: Convert to fraction form
    498,240/687,585.80 = 271,900.08/x
  3. Step 3: Cross multiply
    498,240x = 687,585.80 × 271,900.08
  4. Step 4: Simplify right side
    498,240x = 186,954,634,026.86
  5. Step 5: Solve for x
    x = 186,954,634,026.86/498,240
  6. Step 6: Final answer
    x = 375,230.08

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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.