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Finding the Fourth Proportional to 309,294.61, 426,806.35 and 181,945.60

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Solution

The fourth proportional to 309,294.61, 426,806.35 and 181,945.60 is: 251,073.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,294.61 : 426,806.35 = 181,945.60 : x
  2. Step 2: Convert to fraction form
    309,294.61/426,806.35 = 181,945.60/x
  3. Step 3: Cross multiply
    309,294.61x = 426,806.35 × 181,945.60
  4. Step 4: Simplify right side
    309,294.61x = 77,655,537,434.56
  5. Step 5: Solve for x
    x = 77,655,537,434.56/309,294.61
  6. Step 6: Final answer
    x = 251,073.04

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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.