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Finding the Fourth Proportional to 418,445.98, 627,623.60 and 247,685.02

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Solution

The fourth proportional to 418,445.98, 627,623.60 and 247,685.02 is: 371,500.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,445.98 : 627,623.60 = 247,685.02 : x
  2. Step 2: Convert to fraction form
    418,445.98/627,623.60 = 247,685.02/x
  3. Step 3: Cross multiply
    418,445.98x = 627,623.60 × 247,685.02
  4. Step 4: Simplify right side
    418,445.98x = 155,452,963,918.47
  5. Step 5: Solve for x
    x = 155,452,963,918.47/418,445.98
  6. Step 6: Final answer
    x = 371,500.67

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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.