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Finding the Fourth Proportional to 418,928.69, 627,600.17 and 247,637.59

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Solution

The fourth proportional to 418,928.69, 627,600.17 and 247,637.59 is: 370,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,928.69 : 627,600.17 = 247,637.59 : x
  2. Step 2: Convert to fraction form
    418,928.69/627,600.17 = 247,637.59/x
  3. Step 3: Cross multiply
    418,928.69x = 627,600.17 × 247,637.59
  4. Step 4: Simplify right side
    418,928.69x = 155,417,392,632.48
  5. Step 5: Solve for x
    x = 155,417,392,632.48/418,928.69
  6. Step 6: Final answer
    x = 370,987.70

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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.