Home / 312,834.16-431,598-205,462.36

Finding the Fourth Proportional to 312,834.16, 431,598 and 205,462.36

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Solution

The fourth proportional to 312,834.16, 431,598 and 205,462.36 is: 283,463.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,834.16 : 431,598 = 205,462.36 : x
  2. Step 2: Convert to fraction form
    312,834.16/431,598 = 205,462.36/x
  3. Step 3: Cross multiply
    312,834.16x = 431,598 × 205,462.36
  4. Step 4: Simplify right side
    312,834.16x = 88,677,143,651.28
  5. Step 5: Solve for x
    x = 88,677,143,651.28/312,834.16
  6. Step 6: Final answer
    x = 283,463.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.