Home / 810,605.16-1,215,979.02-211,561.56

Finding the Fourth Proportional to 810,605.16, 1,215,979.02 and 211,561.56

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Solution

The fourth proportional to 810,605.16, 1,215,979.02 and 211,561.56 is: 317,360.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,605.16 : 1,215,979.02 = 211,561.56 : x
  2. Step 2: Convert to fraction form
    810,605.16/1,215,979.02 = 211,561.56/x
  3. Step 3: Cross multiply
    810,605.16x = 1,215,979.02 × 211,561.56
  4. Step 4: Simplify right side
    810,605.16x = 257,254,418,398.47
  5. Step 5: Solve for x
    x = 257,254,418,398.47/810,605.16
  6. Step 6: Final answer
    x = 317,360.94

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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.