Home / 211,987.40-317,981.10-165,331.40

Finding the Fourth Proportional to 211,987.40, 317,981.10 and 165,331.40

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Solution

The fourth proportional to 211,987.40, 317,981.10 and 165,331.40 is: 247,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,987.40 : 317,981.10 = 165,331.40 : x
  2. Step 2: Convert to fraction form
    211,987.40/317,981.10 = 165,331.40/x
  3. Step 3: Cross multiply
    211,987.40x = 317,981.10 × 165,331.40
  4. Step 4: Simplify right side
    211,987.40x = 52,572,260,436.54
  5. Step 5: Solve for x
    x = 52,572,260,436.54/211,987.40
  6. Step 6: Final answer
    x = 247,997.10

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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.