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Finding the Fourth Proportional to 220,447.17, 303,935.45 and 142,785.77

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Solution

The fourth proportional to 220,447.17, 303,935.45 and 142,785.77 is: 196,861.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,447.17 : 303,935.45 = 142,785.77 : x
  2. Step 2: Convert to fraction form
    220,447.17/303,935.45 = 142,785.77/x
  3. Step 3: Cross multiply
    220,447.17x = 303,935.45 × 142,785.77
  4. Step 4: Simplify right side
    220,447.17x = 43,397,655,024.94
  5. Step 5: Solve for x
    x = 43,397,655,024.94/220,447.17
  6. Step 6: Final answer
    x = 196,861.93

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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.