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Finding the Fourth Proportional to 239,347.91, 330,207.54 and 137,336.51

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Solution

The fourth proportional to 239,347.91, 330,207.54 and 137,336.51 is: 189,471.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,347.91 : 330,207.54 = 137,336.51 : x
  2. Step 2: Convert to fraction form
    239,347.91/330,207.54 = 137,336.51/x
  3. Step 3: Cross multiply
    239,347.91x = 330,207.54 × 137,336.51
  4. Step 4: Simplify right side
    239,347.91x = 45,349,551,429.79
  5. Step 5: Solve for x
    x = 45,349,551,429.79/239,347.91
  6. Step 6: Final answer
    x = 189,471.26

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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.