Home / 211,607.28-317,435-76,734.88

Finding the Fourth Proportional to 211,607.28, 317,435 and 76,734.88

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Solution

The fourth proportional to 211,607.28, 317,435 and 76,734.88 is: 115,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,607.28 : 317,435 = 76,734.88 : x
  2. Step 2: Convert to fraction form
    211,607.28/317,435 = 76,734.88/x
  3. Step 3: Cross multiply
    211,607.28x = 317,435 × 76,734.88
  4. Step 4: Simplify right side
    211,607.28x = 24,358,336,632.80
  5. Step 5: Solve for x
    x = 24,358,336,632.80/211,607.28
  6. Step 6: Final answer
    x = 115,111.05

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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.