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Finding the Fourth Proportional to 268,680.64, 402,975.60 and 88,710.40

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Solution

The fourth proportional to 268,680.64, 402,975.60 and 88,710.40 is: 133,050.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,680.64 : 402,975.60 = 88,710.40 : x
  2. Step 2: Convert to fraction form
    268,680.64/402,975.60 = 88,710.40/x
  3. Step 3: Cross multiply
    268,680.64x = 402,975.60 × 88,710.40
  4. Step 4: Simplify right side
    268,680.64x = 35,748,126,666.24
  5. Step 5: Solve for x
    x = 35,748,126,666.24/268,680.64
  6. Step 6: Final answer
    x = 133,050.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.