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Finding the Fourth Proportional to 229,267.74, 316,354.23 and 128,646.30

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Solution

The fourth proportional to 229,267.74, 316,354.23 and 128,646.30 is: 177,512.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,267.74 : 316,354.23 = 128,646.30 : x
  2. Step 2: Convert to fraction form
    229,267.74/316,354.23 = 128,646.30/x
  3. Step 3: Cross multiply
    229,267.74x = 316,354.23 × 128,646.30
  4. Step 4: Simplify right side
    229,267.74x = 40,697,801,178.85
  5. Step 5: Solve for x
    x = 40,697,801,178.85/229,267.74
  6. Step 6: Final answer
    x = 177,512.11

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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.