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Finding the Fourth Proportional to 265,762.50, 398,645.19 and 68,770.50

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Solution

The fourth proportional to 265,762.50, 398,645.19 and 68,770.50 is: 103,156.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,762.50 : 398,645.19 = 68,770.50 : x
  2. Step 2: Convert to fraction form
    265,762.50/398,645.19 = 68,770.50/x
  3. Step 3: Cross multiply
    265,762.50x = 398,645.19 × 68,770.50
  4. Step 4: Simplify right side
    265,762.50x = 27,415,029,038.90
  5. Step 5: Solve for x
    x = 27,415,029,038.90/265,762.50
  6. Step 6: Final answer
    x = 103,156.12

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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.