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Finding the Fourth Proportional to 239,382.40, 358,987.20 and 121,014.40

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Solution

The fourth proportional to 239,382.40, 358,987.20 and 121,014.40 is: 181,477.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,382.40 : 358,987.20 = 121,014.40 : x
  2. Step 2: Convert to fraction form
    239,382.40/358,987.20 = 121,014.40/x
  3. Step 3: Cross multiply
    239,382.40x = 358,987.20 × 121,014.40
  4. Step 4: Simplify right side
    239,382.40x = 43,442,620,615.68
  5. Step 5: Solve for x
    x = 43,442,620,615.68/239,382.40
  6. Step 6: Final answer
    x = 181,477.92

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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.