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Finding the Fourth Proportional to 240,136.16, 360,390.18 and 90,512.58

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Solution

The fourth proportional to 240,136.16, 360,390.18 and 90,512.58 is: 135,838.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,136.16 : 360,390.18 = 90,512.58 : x
  2. Step 2: Convert to fraction form
    240,136.16/360,390.18 = 90,512.58/x
  3. Step 3: Cross multiply
    240,136.16x = 360,390.18 × 90,512.58
  4. Step 4: Simplify right side
    240,136.16x = 32,619,844,998.46
  5. Step 5: Solve for x
    x = 32,619,844,998.46/240,136.16
  6. Step 6: Final answer
    x = 135,838.95

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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.