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Finding the Fourth Proportional to 239,433.81, 330,418.62 and 137,465.82

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Solution

The fourth proportional to 239,433.81, 330,418.62 and 137,465.82 is: 189,702.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,433.81 : 330,418.62 = 137,465.82 : x
  2. Step 2: Convert to fraction form
    239,433.81/330,418.62 = 137,465.82/x
  3. Step 3: Cross multiply
    239,433.81x = 330,418.62 × 137,465.82
  4. Step 4: Simplify right side
    239,433.81x = 45,421,266,541.57
  5. Step 5: Solve for x
    x = 45,421,266,541.57/239,433.81
  6. Step 6: Final answer
    x = 189,702.81

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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.