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Finding the Fourth Proportional to 220,417.20, 330,625.80 and 141,685.20

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Solution

The fourth proportional to 220,417.20, 330,625.80 and 141,685.20 is: 212,527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,417.20 : 330,625.80 = 141,685.20 : x
  2. Step 2: Convert to fraction form
    220,417.20/330,625.80 = 141,685.20/x
  3. Step 3: Cross multiply
    220,417.20x = 330,625.80 × 141,685.20
  4. Step 4: Simplify right side
    220,417.20x = 46,844,782,598.16
  5. Step 5: Solve for x
    x = 46,844,782,598.16/220,417.20
  6. Step 6: Final answer
    x = 212,527.80

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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.