Home / 287,639.46-431,681.97-231,616.75

Finding the Fourth Proportional to 287,639.46, 431,681.97 and 231,616.75

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Solution

The fourth proportional to 287,639.46, 431,681.97 and 231,616.75 is: 347,604.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,639.46 : 431,681.97 = 231,616.75 : x
  2. Step 2: Convert to fraction form
    287,639.46/431,681.97 = 231,616.75/x
  3. Step 3: Cross multiply
    287,639.46x = 431,681.97 × 231,616.75
  4. Step 4: Simplify right side
    287,639.46x = 99,984,774,925.00
  5. Step 5: Solve for x
    x = 99,984,774,925.00/287,639.46
  6. Step 6: Final answer
    x = 347,604.51

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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.