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Finding the Fourth Proportional to 418,417.32, 627,626.30 and 118,859.24

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Solution

The fourth proportional to 418,417.32, 627,626.30 and 118,859.24 is: 178,288.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,417.32 : 627,626.30 = 118,859.24 : x
  2. Step 2: Convert to fraction form
    418,417.32/627,626.30 = 118,859.24/x
  3. Step 3: Cross multiply
    418,417.32x = 627,626.30 × 118,859.24
  4. Step 4: Simplify right side
    418,417.32x = 74,599,185,022.01
  5. Step 5: Solve for x
    x = 74,599,185,022.01/418,417.32
  6. Step 6: Final answer
    x = 178,288.95

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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.