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Finding the Fourth Proportional to 510,659.13, 765,919.72 and 211,098.16

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Solution

The fourth proportional to 510,659.13, 765,919.72 and 211,098.16 is: 316,618.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,659.13 : 765,919.72 = 211,098.16 : x
  2. Step 2: Convert to fraction form
    510,659.13/765,919.72 = 211,098.16/x
  3. Step 3: Cross multiply
    510,659.13x = 765,919.72 × 211,098.16
  4. Step 4: Simplify right side
    510,659.13x = 161,684,243,599.72
  5. Step 5: Solve for x
    x = 161,684,243,599.72/510,659.13
  6. Step 6: Final answer
    x = 316,618.73

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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.