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Finding the Fourth Proportional to 229,528.80, 316,697.85 and 138,882.51

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Solution

The fourth proportional to 229,528.80, 316,697.85 and 138,882.51 is: 191,626.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,528.80 : 316,697.85 = 138,882.51 : x
  2. Step 2: Convert to fraction form
    229,528.80/316,697.85 = 138,882.51/x
  3. Step 3: Cross multiply
    229,528.80x = 316,697.85 × 138,882.51
  4. Step 4: Simplify right side
    229,528.80x = 43,983,792,319.60
  5. Step 5: Solve for x
    x = 43,983,792,319.60/229,528.80
  6. Step 6: Final answer
    x = 191,626.46

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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.