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Finding the Fourth Proportional to 325,273.90, 487,582.80 and 147,908.20

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Solution

The fourth proportional to 325,273.90, 487,582.80 and 147,908.20 is: 221,713.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,273.90 : 487,582.80 = 147,908.20 : x
  2. Step 2: Convert to fraction form
    325,273.90/487,582.80 = 147,908.20/x
  3. Step 3: Cross multiply
    325,273.90x = 487,582.80 × 147,908.20
  4. Step 4: Simplify right side
    325,273.90x = 72,117,494,298.96
  5. Step 5: Solve for x
    x = 72,117,494,298.96/325,273.90
  6. Step 6: Final answer
    x = 221,713.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.