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Finding the Fourth Proportional to 519,512.55, 716,920.50 and 290,073.75

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Solution

The fourth proportional to 519,512.55, 716,920.50 and 290,073.75 is: 400,297.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,512.55 : 716,920.50 = 290,073.75 : x
  2. Step 2: Convert to fraction form
    519,512.55/716,920.50 = 290,073.75/x
  3. Step 3: Cross multiply
    519,512.55x = 716,920.50 × 290,073.75
  4. Step 4: Simplify right side
    519,512.55x = 207,959,817,886.88
  5. Step 5: Solve for x
    x = 207,959,817,886.88/519,512.55
  6. Step 6: Final answer
    x = 400,297.97

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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.