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Finding the Fourth Proportional to 308,966.56, 426,370.56 and 173,001.76

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Solution

The fourth proportional to 308,966.56, 426,370.56 and 173,001.76 is: 238,740.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,966.56 : 426,370.56 = 173,001.76 : x
  2. Step 2: Convert to fraction form
    308,966.56/426,370.56 = 173,001.76/x
  3. Step 3: Cross multiply
    308,966.56x = 426,370.56 × 173,001.76
  4. Step 4: Simplify right side
    308,966.56x = 73,762,857,292.19
  5. Step 5: Solve for x
    x = 73,762,857,292.19/308,966.56
  6. Step 6: Final answer
    x = 238,740.59

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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.