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Finding the Fourth Proportional to 384,077.80, 576,116.70 and 265,979.80

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Solution

The fourth proportional to 384,077.80, 576,116.70 and 265,979.80 is: 398,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,077.80 : 576,116.70 = 265,979.80 : x
  2. Step 2: Convert to fraction form
    384,077.80/576,116.70 = 265,979.80/x
  3. Step 3: Cross multiply
    384,077.80x = 576,116.70 × 265,979.80
  4. Step 4: Simplify right side
    384,077.80x = 153,235,404,642.66
  5. Step 5: Solve for x
    x = 153,235,404,642.66/384,077.80
  6. Step 6: Final answer
    x = 398,969.70

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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.