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Finding the Fourth Proportional to 253,403.92, 349,700.52 and 140,237.20

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Solution

The fourth proportional to 253,403.92, 349,700.52 and 140,237.20 is: 193,529.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,403.92 : 349,700.52 = 140,237.20 : x
  2. Step 2: Convert to fraction form
    253,403.92/349,700.52 = 140,237.20/x
  3. Step 3: Cross multiply
    253,403.92x = 349,700.52 × 140,237.20
  4. Step 4: Simplify right side
    253,403.92x = 49,041,021,763.34
  5. Step 5: Solve for x
    x = 49,041,021,763.34/253,403.92
  6. Step 6: Final answer
    x = 193,529.06

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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.