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Finding the Fourth Proportional to 229,692.42, 316,986.12 and 127,728.20

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Solution

The fourth proportional to 229,692.42, 316,986.12 and 127,728.20 is: 176,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,692.42 : 316,986.12 = 127,728.20 : x
  2. Step 2: Convert to fraction form
    229,692.42/316,986.12 = 127,728.20/x
  3. Step 3: Cross multiply
    229,692.42x = 316,986.12 × 127,728.20
  4. Step 4: Simplify right side
    229,692.42x = 40,488,066,532.58
  5. Step 5: Solve for x
    x = 40,488,066,532.58/229,692.42
  6. Step 6: Final answer
    x = 176,270.80

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1.5x scale

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.