Home / 215,140.96-322,718.28-65,382.56

Finding the Fourth Proportional to 215,140.96, 322,718.28 and 65,382.56

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Solution

The fourth proportional to 215,140.96, 322,718.28 and 65,382.56 is: 98,075.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,140.96 : 322,718.28 = 65,382.56 : x
  2. Step 2: Convert to fraction form
    215,140.96/322,718.28 = 65,382.56/x
  3. Step 3: Cross multiply
    215,140.96x = 322,718.28 × 65,382.56
  4. Step 4: Simplify right side
    215,140.96x = 21,100,146,656.61
  5. Step 5: Solve for x
    x = 21,100,146,656.61/215,140.96
  6. Step 6: Final answer
    x = 98,075.92

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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.