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Finding the Fourth Proportional to 384,345.25, 576,458.73 and 128,182.32

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Solution

The fourth proportional to 384,345.25, 576,458.73 and 128,182.32 is: 192,253.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,345.25 : 576,458.73 = 128,182.32 : x
  2. Step 2: Convert to fraction form
    384,345.25/576,458.73 = 128,182.32/x
  3. Step 3: Cross multiply
    384,345.25x = 576,458.73 × 128,182.32
  4. Step 4: Simplify right side
    384,345.25x = 73,891,817,395.65
  5. Step 5: Solve for x
    x = 73,891,817,395.65/384,345.25
  6. Step 6: Final answer
    x = 192,253.76

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1.5x scale

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.