Home / 211,643.08-317,461.12-85,280.24

Finding the Fourth Proportional to 211,643.08, 317,461.12 and 85,280.24

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Solution

The fourth proportional to 211,643.08, 317,461.12 and 85,280.24 is: 127,918.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,643.08 : 317,461.12 = 85,280.24 : x
  2. Step 2: Convert to fraction form
    211,643.08/317,461.12 = 85,280.24/x
  3. Step 3: Cross multiply
    211,643.08x = 317,461.12 × 85,280.24
  4. Step 4: Simplify right side
    211,643.08x = 27,073,160,504.27
  5. Step 5: Solve for x
    x = 27,073,160,504.27/211,643.08
  6. Step 6: Final answer
    x = 127,918.95

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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.