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Finding the Fourth Proportional to 239,152.50, 330,030.45 and 138,608.82

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Solution

The fourth proportional to 239,152.50, 330,030.45 and 138,608.82 is: 191,280.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,152.50 : 330,030.45 = 138,608.82 : x
  2. Step 2: Convert to fraction form
    239,152.50/330,030.45 = 138,608.82/x
  3. Step 3: Cross multiply
    239,152.50x = 330,030.45 × 138,608.82
  4. Step 4: Simplify right side
    239,152.50x = 45,745,131,238.57
  5. Step 5: Solve for x
    x = 45,745,131,238.57/239,152.50
  6. Step 6: Final answer
    x = 191,280.17

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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.