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Finding the Fourth Proportional to 287,844.30, 431,377.65 and 192,804.30

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Solution

The fourth proportional to 287,844.30, 431,377.65 and 192,804.30 is: 288,946.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,844.30 : 431,377.65 = 192,804.30 : x
  2. Step 2: Convert to fraction form
    287,844.30/431,377.65 = 192,804.30/x
  3. Step 3: Cross multiply
    287,844.30x = 431,377.65 × 192,804.30
  4. Step 4: Simplify right side
    287,844.30x = 83,171,465,843.90
  5. Step 5: Solve for x
    x = 83,171,465,843.90/287,844.30
  6. Step 6: Final answer
    x = 288,946.02

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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.