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Finding the Fourth Proportional to 515,856.80, 773,894.55 and 155,998.10

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Solution

The fourth proportional to 515,856.80, 773,894.55 and 155,998.10 is: 234,030.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,856.80 : 773,894.55 = 155,998.10 : x
  2. Step 2: Convert to fraction form
    515,856.80/773,894.55 = 155,998.10/x
  3. Step 3: Cross multiply
    515,856.80x = 773,894.55 × 155,998.10
  4. Step 4: Simplify right side
    515,856.80x = 120,726,079,400.36
  5. Step 5: Solve for x
    x = 120,726,079,400.36/515,856.80
  6. Step 6: Final answer
    x = 234,030.22

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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.