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Finding the Fourth Proportional to 287,215.60, 430,823.40 and 73,983.10

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Solution

The fourth proportional to 287,215.60, 430,823.40 and 73,983.10 is: 110,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,215.60 : 430,823.40 = 73,983.10 : x
  2. Step 2: Convert to fraction form
    287,215.60/430,823.40 = 73,983.10/x
  3. Step 3: Cross multiply
    287,215.60x = 430,823.40 × 73,983.10
  4. Step 4: Simplify right side
    287,215.60x = 31,873,650,684.54
  5. Step 5: Solve for x
    x = 31,873,650,684.54/287,215.60
  6. Step 6: Final answer
    x = 110,974.65

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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.