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Finding the Fourth Proportional to 239,339.65, 330,301.71 and 137,364.29

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Solution

The fourth proportional to 239,339.65, 330,301.71 and 137,364.29 is: 189,570.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,339.65 : 330,301.71 = 137,364.29 : x
  2. Step 2: Convert to fraction form
    239,339.65/330,301.71 = 137,364.29/x
  3. Step 3: Cross multiply
    239,339.65x = 330,301.71 × 137,364.29
  4. Step 4: Simplify right side
    239,339.65x = 45,371,659,193.11
  5. Step 5: Solve for x
    x = 45,371,659,193.11/239,339.65
  6. Step 6: Final answer
    x = 189,570.18

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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.