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Finding the Fourth Proportional to 519,147.36, 716,255.52 and 289,667.52

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Solution

The fourth proportional to 519,147.36, 716,255.52 and 289,667.52 is: 399,647.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,147.36 : 716,255.52 = 289,667.52 : x
  2. Step 2: Convert to fraction form
    519,147.36/716,255.52 = 289,667.52/x
  3. Step 3: Cross multiply
    519,147.36x = 716,255.52 × 289,667.52
  4. Step 4: Simplify right side
    519,147.36x = 207,475,960,164.71
  5. Step 5: Solve for x
    x = 207,475,960,164.71/519,147.36
  6. Step 6: Final answer
    x = 399,647.53

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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.