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Finding the Fourth Proportional to 229,001.60, 316,013.64 and 128,393.12

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Solution

The fourth proportional to 229,001.60, 316,013.64 and 128,393.12 is: 177,177.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,001.60 : 316,013.64 = 128,393.12 : x
  2. Step 2: Convert to fraction form
    229,001.60/316,013.64 = 128,393.12/x
  3. Step 3: Cross multiply
    229,001.60x = 316,013.64 × 128,393.12
  4. Step 4: Simplify right side
    229,001.60x = 40,573,975,622.09
  5. Step 5: Solve for x
    x = 40,573,975,622.09/229,001.60
  6. Step 6: Final answer
    x = 177,177.70

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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.