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Finding the Fourth Proportional to 253,930.28, 350,421.54 and 139,206.83

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Solution

The fourth proportional to 253,930.28, 350,421.54 and 139,206.83 is: 192,104.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,930.28 : 350,421.54 = 139,206.83 : x
  2. Step 2: Convert to fraction form
    253,930.28/350,421.54 = 139,206.83/x
  3. Step 3: Cross multiply
    253,930.28x = 350,421.54 × 139,206.83
  4. Step 4: Simplify right side
    253,930.28x = 48,781,073,802.24
  5. Step 5: Solve for x
    x = 48,781,073,802.24/253,930.28
  6. Step 6: Final answer
    x = 192,104.20

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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.