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Finding the Fourth Proportional to 201,915.60, 302,849.28 and 83,572.80

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Solution

The fourth proportional to 201,915.60, 302,849.28 and 83,572.80 is: 125,349.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,915.60 : 302,849.28 = 83,572.80 : x
  2. Step 2: Convert to fraction form
    201,915.60/302,849.28 = 83,572.80/x
  3. Step 3: Cross multiply
    201,915.60x = 302,849.28 × 83,572.80
  4. Step 4: Simplify right side
    201,915.60x = 25,309,962,307.58
  5. Step 5: Solve for x
    x = 25,309,962,307.58/201,915.60
  6. Step 6: Final answer
    x = 125,349.22

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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.