Home / 487,919.52-731,378.16-188,318.88

Finding the Fourth Proportional to 487,919.52, 731,378.16 and 188,318.88

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Solution

The fourth proportional to 487,919.52, 731,378.16 and 188,318.88 is: 282,284.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,919.52 : 731,378.16 = 188,318.88 : x
  2. Step 2: Convert to fraction form
    487,919.52/731,378.16 = 188,318.88/x
  3. Step 3: Cross multiply
    487,919.52x = 731,378.16 × 188,318.88
  4. Step 4: Simplify right side
    487,919.52x = 137,732,315,947.66
  5. Step 5: Solve for x
    x = 137,732,315,947.66/487,919.52
  6. Step 6: Final answer
    x = 282,284.91

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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.