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Finding the Fourth Proportional to 515,124.34, 772,678.30 and 141,147.34

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Solution

The fourth proportional to 515,124.34, 772,678.30 and 141,147.34 is: 211,718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,124.34 : 772,678.30 = 141,147.34 : x
  2. Step 2: Convert to fraction form
    515,124.34/772,678.30 = 141,147.34/x
  3. Step 3: Cross multiply
    515,124.34x = 772,678.30 × 141,147.34
  4. Step 4: Simplify right side
    515,124.34x = 109,061,486,720.72
  5. Step 5: Solve for x
    x = 109,061,486,720.72/515,124.34
  6. Step 6: Final answer
    x = 211,718.76

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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.