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Finding the Fourth Proportional to 371,551.60, 512,784.98 and 220,648.60

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Solution

The fourth proportional to 371,551.60, 512,784.98 and 220,648.60 is: 304,521.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,551.60 : 512,784.98 = 220,648.60 : x
  2. Step 2: Convert to fraction form
    371,551.60/512,784.98 = 220,648.60/x
  3. Step 3: Cross multiply
    371,551.60x = 512,784.98 × 220,648.60
  4. Step 4: Simplify right side
    371,551.60x = 113,145,287,938.03
  5. Step 5: Solve for x
    x = 113,145,287,938.03/371,551.60
  6. Step 6: Final answer
    x = 304,521.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.