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Finding the Fourth Proportional to 207,956.63, 286,980.17 and 112,463.30

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Solution

The fourth proportional to 207,956.63, 286,980.17 and 112,463.30 is: 155,199.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,956.63 : 286,980.17 = 112,463.30 : x
  2. Step 2: Convert to fraction form
    207,956.63/286,980.17 = 112,463.30/x
  3. Step 3: Cross multiply
    207,956.63x = 286,980.17 × 112,463.30
  4. Step 4: Simplify right side
    207,956.63x = 32,274,737,107.89
  5. Step 5: Solve for x
    x = 32,274,737,107.89/207,956.63
  6. Step 6: Final answer
    x = 155,199.36

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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.