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Finding the Fourth Proportional to 201,718.80, 302,468.85 and 83,256.30

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Solution

The fourth proportional to 201,718.80, 302,468.85 and 83,256.30 is: 124,839.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,718.80 : 302,468.85 = 83,256.30 : x
  2. Step 2: Convert to fraction form
    201,718.80/302,468.85 = 83,256.30/x
  3. Step 3: Cross multiply
    201,718.80x = 302,468.85 × 83,256.30
  4. Step 4: Simplify right side
    201,718.80x = 25,182,437,316.26
  5. Step 5: Solve for x
    x = 25,182,437,316.26/201,718.80
  6. Step 6: Final answer
    x = 124,839.32

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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.