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Finding the Fourth Proportional to 324,622.60, 487,079.70 and 147,038.20

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Solution

The fourth proportional to 324,622.60, 487,079.70 and 147,038.20 is: 220,623.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,622.60 : 487,079.70 = 147,038.20 : x
  2. Step 2: Convert to fraction form
    324,622.60/487,079.70 = 147,038.20/x
  3. Step 3: Cross multiply
    324,622.60x = 487,079.70 × 147,038.20
  4. Step 4: Simplify right side
    324,622.60x = 71,619,322,344.54
  5. Step 5: Solve for x
    x = 71,619,322,344.54/324,622.60
  6. Step 6: Final answer
    x = 220,623.34

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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.