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Finding the Fourth Proportional to 853,148.64, 1,279,791 and 292,188

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Solution

The fourth proportional to 853,148.64, 1,279,791 and 292,188 is: 438,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,148.64 : 1,279,791 = 292,188 : x
  2. Step 2: Convert to fraction form
    853,148.64/1,279,791 = 292,188/x
  3. Step 3: Cross multiply
    853,148.64x = 1,279,791 × 292,188
  4. Step 4: Simplify right side
    853,148.64x = 373,939,572,708
  5. Step 5: Solve for x
    x = 373,939,572,708/853,148.64
  6. Step 6: Final answer
    x = 438,305.30

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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.