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Finding the Fourth Proportional to 239,282.16, 330,209.40 and 138,738.48

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Solution

The fourth proportional to 239,282.16, 330,209.40 and 138,738.48 is: 191,459.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,282.16 : 330,209.40 = 138,738.48 : x
  2. Step 2: Convert to fraction form
    239,282.16/330,209.40 = 138,738.48/x
  3. Step 3: Cross multiply
    239,282.16x = 330,209.40 × 138,738.48
  4. Step 4: Simplify right side
    239,282.16x = 45,812,750,237.71
  5. Step 5: Solve for x
    x = 45,812,750,237.71/239,282.16
  6. Step 6: Final answer
    x = 191,459.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.