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Finding the Fourth Proportional to 378,045.60, 568,234.80 and 371,047.20

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Solution

The fourth proportional to 378,045.60, 568,234.80 and 371,047.20 is: 557,715.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,045.60 : 568,234.80 = 371,047.20 : x
  2. Step 2: Convert to fraction form
    378,045.60/568,234.80 = 371,047.20/x
  3. Step 3: Cross multiply
    378,045.60x = 568,234.80 × 371,047.20
  4. Step 4: Simplify right side
    378,045.60x = 210,841,931,482.56
  5. Step 5: Solve for x
    x = 210,841,931,482.56/378,045.60
  6. Step 6: Final answer
    x = 557,715.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.