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Finding the Fourth Proportional to 418,205.70, 627,332.59 and 118,662.84

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Solution

The fourth proportional to 418,205.70, 627,332.59 and 118,662.84 is: 178,001.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,205.70 : 627,332.59 = 118,662.84 : x
  2. Step 2: Convert to fraction form
    418,205.70/627,332.59 = 118,662.84/x
  3. Step 3: Cross multiply
    418,205.70x = 627,332.59 × 118,662.84
  4. Step 4: Simplify right side
    418,205.70x = 74,441,066,753.96
  5. Step 5: Solve for x
    x = 74,441,066,753.96/418,205.70
  6. Step 6: Final answer
    x = 178,001.08

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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.