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Finding the Fourth Proportional to 239,284.16, 330,212.16 and 138,740.48

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Solution

The fourth proportional to 239,284.16, 330,212.16 and 138,740.48 is: 191,461.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,284.16 : 330,212.16 = 138,740.48 : x
  2. Step 2: Convert to fraction form
    239,284.16/330,212.16 = 138,740.48/x
  3. Step 3: Cross multiply
    239,284.16x = 330,212.16 × 138,740.48
  4. Step 4: Simplify right side
    239,284.16x = 45,813,793,580.24
  5. Step 5: Solve for x
    x = 45,813,793,580.24/239,284.16
  6. Step 6: Final answer
    x = 191,461.87

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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.