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Finding the Fourth Proportional to 539,138.90, 808,319.55 and 352,255.70

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Solution

The fourth proportional to 539,138.90, 808,319.55 and 352,255.70 is: 528,129.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,138.90 : 808,319.55 = 352,255.70 : x
  2. Step 2: Convert to fraction form
    539,138.90/808,319.55 = 352,255.70/x
  3. Step 3: Cross multiply
    539,138.90x = 808,319.55 × 352,255.70
  4. Step 4: Simplify right side
    539,138.90x = 284,735,168,908.94
  5. Step 5: Solve for x
    x = 284,735,168,908.94/539,138.90
  6. Step 6: Final answer
    x = 528,129.52

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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.