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Finding the Fourth Proportional to 324,762.40, 487,217.40 and 147,320.20

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Solution

The fourth proportional to 324,762.40, 487,217.40 and 147,320.20 is: 221,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,762.40 : 487,217.40 = 147,320.20 : x
  2. Step 2: Convert to fraction form
    324,762.40/487,217.40 = 147,320.20/x
  3. Step 3: Cross multiply
    324,762.40x = 487,217.40 × 147,320.20
  4. Step 4: Simplify right side
    324,762.40x = 71,776,964,811.48
  5. Step 5: Solve for x
    x = 71,776,964,811.48/324,762.40
  6. Step 6: Final answer
    x = 221,013.78

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1.5x scale

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.