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Finding the Fourth Proportional to 347,561.10, 479,225.65 and 278,595.42

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Solution

The fourth proportional to 347,561.10, 479,225.65 and 278,595.42 is: 384,134.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,561.10 : 479,225.65 = 278,595.42 : x
  2. Step 2: Convert to fraction form
    347,561.10/479,225.65 = 278,595.42/x
  3. Step 3: Cross multiply
    347,561.10x = 479,225.65 × 278,595.42
  4. Step 4: Simplify right side
    347,561.10x = 133,510,071,236.52
  5. Step 5: Solve for x
    x = 133,510,071,236.52/347,561.10
  6. Step 6: Final answer
    x = 384,134.10

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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.