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Finding the Fourth Proportional to 283,145.40, 424,718.10 and 231,305.40

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Solution

The fourth proportional to 283,145.40, 424,718.10 and 231,305.40 is: 346,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,145.40 : 424,718.10 = 231,305.40 : x
  2. Step 2: Convert to fraction form
    283,145.40/424,718.10 = 231,305.40/x
  3. Step 3: Cross multiply
    283,145.40x = 424,718.10 × 231,305.40
  4. Step 4: Simplify right side
    283,145.40x = 98,239,590,007.74
  5. Step 5: Solve for x
    x = 98,239,590,007.74/283,145.40
  6. Step 6: Final answer
    x = 346,958.10

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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.