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Finding the Fourth Proportional to 418,349.63, 627,569.08 and 133,938.50

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Solution

The fourth proportional to 418,349.63, 627,569.08 and 133,938.50 is: 200,922.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,349.63 : 627,569.08 = 133,938.50 : x
  2. Step 2: Convert to fraction form
    418,349.63/627,569.08 = 133,938.50/x
  3. Step 3: Cross multiply
    418,349.63x = 627,569.08 × 133,938.50
  4. Step 4: Simplify right side
    418,349.63x = 84,055,657,748.89
  5. Step 5: Solve for x
    x = 84,055,657,748.89/418,349.63
  6. Step 6: Final answer
    x = 200,922.03

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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.