Home / 287,600.10-431,837.55-221,115.30

Finding the Fourth Proportional to 287,600.10, 431,837.55 and 221,115.30

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Solution

The fourth proportional to 287,600.10, 431,837.55 and 221,115.30 is: 332,009.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,600.10 : 431,837.55 = 221,115.30 : x
  2. Step 2: Convert to fraction form
    287,600.10/431,837.55 = 221,115.30/x
  3. Step 3: Cross multiply
    287,600.10x = 431,837.55 × 221,115.30
  4. Step 4: Simplify right side
    287,600.10x = 95,485,889,419.52
  5. Step 5: Solve for x
    x = 95,485,889,419.52/287,600.10
  6. Step 6: Final answer
    x = 332,009.24

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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.