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Finding the Fourth Proportional to 418,103.69, 627,155.55 and 181,441.13

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Solution

The fourth proportional to 418,103.69, 627,155.55 and 181,441.13 is: 272,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,103.69 : 627,155.55 = 181,441.13 : x
  2. Step 2: Convert to fraction form
    418,103.69/627,155.55 = 181,441.13/x
  3. Step 3: Cross multiply
    418,103.69x = 627,155.55 × 181,441.13
  4. Step 4: Simplify right side
    418,103.69x = 113,791,808,541.99
  5. Step 5: Solve for x
    x = 113,791,808,541.99/418,103.69
  6. Step 6: Final answer
    x = 272,161.70

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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.