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Finding the Fourth Proportional to 349,290.40, 523,935.60 and 112,640.80

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Solution

The fourth proportional to 349,290.40, 523,935.60 and 112,640.80 is: 168,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,290.40 : 523,935.60 = 112,640.80 : x
  2. Step 2: Convert to fraction form
    349,290.40/523,935.60 = 112,640.80/x
  3. Step 3: Cross multiply
    349,290.40x = 523,935.60 × 112,640.80
  4. Step 4: Simplify right side
    349,290.40x = 59,016,525,132.48
  5. Step 5: Solve for x
    x = 59,016,525,132.48/349,290.40
  6. Step 6: Final answer
    x = 168,961.20

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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.