Home / 229,221.20-316,309.40-127,238.64

Finding the Fourth Proportional to 229,221.20, 316,309.40 and 127,238.64

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Solution

The fourth proportional to 229,221.20, 316,309.40 and 127,238.64 is: 175,580.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,221.20 : 316,309.40 = 127,238.64 : x
  2. Step 2: Convert to fraction form
    229,221.20/316,309.40 = 127,238.64/x
  3. Step 3: Cross multiply
    229,221.20x = 316,309.40 × 127,238.64
  4. Step 4: Simplify right side
    229,221.20x = 40,246,777,875.22
  5. Step 5: Solve for x
    x = 40,246,777,875.22/229,221.20
  6. Step 6: Final answer
    x = 175,580.52

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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.