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Finding the Fourth Proportional to 418,214.49, 627,320.58 and 118,695.35

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Solution

The fourth proportional to 418,214.49, 627,320.58 and 118,695.35 is: 178,042.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,214.49 : 627,320.58 = 118,695.35 : x
  2. Step 2: Convert to fraction form
    418,214.49/627,320.58 = 118,695.35/x
  3. Step 3: Cross multiply
    418,214.49x = 627,320.58 × 118,695.35
  4. Step 4: Simplify right side
    418,214.49x = 74,460,036,928.50
  5. Step 5: Solve for x
    x = 74,460,036,928.50/418,214.49
  6. Step 6: Final answer
    x = 178,042.70

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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.