Home / 210,217.14-315,138.18-77,066.30

Finding the Fourth Proportional to 210,217.14, 315,138.18 and 77,066.30

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Solution

The fourth proportional to 210,217.14, 315,138.18 and 77,066.30 is: 115,530.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,217.14 : 315,138.18 = 77,066.30 : x
  2. Step 2: Convert to fraction form
    210,217.14/315,138.18 = 77,066.30/x
  3. Step 3: Cross multiply
    210,217.14x = 315,138.18 × 77,066.30
  4. Step 4: Simplify right side
    210,217.14x = 24,286,533,521.33
  5. Step 5: Solve for x
    x = 24,286,533,521.33/210,217.14
  6. Step 6: Final answer
    x = 115,530.70

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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.