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Finding the Fourth Proportional to 519,479.90, 716,875.29 and 290,040.71

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Solution

The fourth proportional to 519,479.90, 716,875.29 and 290,040.71 is: 400,252.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,479.90 : 716,875.29 = 290,040.71 : x
  2. Step 2: Convert to fraction form
    519,479.90/716,875.29 = 290,040.71/x
  3. Step 3: Cross multiply
    519,479.90x = 716,875.29 × 290,040.71
  4. Step 4: Simplify right side
    519,479.90x = 207,923,017,196.96
  5. Step 5: Solve for x
    x = 207,923,017,196.96/519,479.90
  6. Step 6: Final answer
    x = 400,252.28

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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.