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Finding the Fourth Proportional to 239,151, 330,028.38 and 138,607.32

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Solution

The fourth proportional to 239,151, 330,028.38 and 138,607.32 is: 191,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,151 : 330,028.38 = 138,607.32 : x
  2. Step 2: Convert to fraction form
    239,151/330,028.38 = 138,607.32/x
  3. Step 3: Cross multiply
    239,151x = 330,028.38 × 138,607.32
  4. Step 4: Simplify right side
    239,151x = 45,744,349,275.74
  5. Step 5: Solve for x
    x = 45,744,349,275.74/239,151
  6. Step 6: Final answer
    x = 191,278.10

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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.