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Finding the Fourth Proportional to 418,354.67, 627,573.51 and 133,973.79

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Solution

The fourth proportional to 418,354.67, 627,573.51 and 133,973.79 is: 200,973.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,354.67 : 627,573.51 = 133,973.79 : x
  2. Step 2: Convert to fraction form
    418,354.67/627,573.51 = 133,973.79/x
  3. Step 3: Cross multiply
    418,354.67x = 627,573.51 × 133,973.79
  4. Step 4: Simplify right side
    418,354.67x = 84,078,401,638.30
  5. Step 5: Solve for x
    x = 84,078,401,638.30/418,354.67
  6. Step 6: Final answer
    x = 200,973.98

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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.