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Finding the Fourth Proportional to 768,211.20, 1,152,163.20 and 368,851.20

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Solution

The fourth proportional to 768,211.20, 1,152,163.20 and 368,851.20 is: 553,203.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,211.20 : 1,152,163.20 = 368,851.20 : x
  2. Step 2: Convert to fraction form
    768,211.20/1,152,163.20 = 368,851.20/x
  3. Step 3: Cross multiply
    768,211.20x = 1,152,163.20 × 368,851.20
  4. Step 4: Simplify right side
    768,211.20x = 424,976,778,915.84
  5. Step 5: Solve for x
    x = 424,976,778,915.84/768,211.20
  6. Step 6: Final answer
    x = 553,203.05

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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.