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Finding the Fourth Proportional to 229,266.48, 316,416.96 and 128,664.48

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Solution

The fourth proportional to 229,266.48, 316,416.96 and 128,664.48 is: 177,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,266.48 : 316,416.96 = 128,664.48 : x
  2. Step 2: Convert to fraction form
    229,266.48/316,416.96 = 128,664.48/x
  3. Step 3: Cross multiply
    229,266.48x = 316,416.96 × 128,664.48
  4. Step 4: Simplify right side
    229,266.48x = 40,711,623,621.58
  5. Step 5: Solve for x
    x = 40,711,623,621.58/229,266.48
  6. Step 6: Final answer
    x = 177,573.38

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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.