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Finding the Fourth Proportional to 239,552.80, 359,278.80 and 121,112.80

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Solution

The fourth proportional to 239,552.80, 359,278.80 and 121,112.80 is: 181,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,552.80 : 359,278.80 = 121,112.80 : x
  2. Step 2: Convert to fraction form
    239,552.80/359,278.80 = 121,112.80/x
  3. Step 3: Cross multiply
    239,552.80x = 359,278.80 × 121,112.80
  4. Step 4: Simplify right side
    239,552.80x = 43,513,261,448.64
  5. Step 5: Solve for x
    x = 43,513,261,448.64/239,552.80
  6. Step 6: Final answer
    x = 181,643.72

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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.