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Finding the Fourth Proportional to 418,418.04, 627,710.58 and 218,828.28

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Solution

The fourth proportional to 418,418.04, 627,710.58 and 218,828.28 is: 328,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,418.04 : 627,710.58 = 218,828.28 : x
  2. Step 2: Convert to fraction form
    418,418.04/627,710.58 = 218,828.28/x
  3. Step 3: Cross multiply
    418,418.04x = 627,710.58 × 218,828.28
  4. Step 4: Simplify right side
    418,418.04x = 137,360,826,559.20
  5. Step 5: Solve for x
    x = 137,360,826,559.20/418,418.04
  6. Step 6: Final answer
    x = 328,286.10

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1.5x scale

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.