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Finding the Fourth Proportional to 768,399, 1,152,690.54 and 235,850.28

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Solution

The fourth proportional to 768,399, 1,152,690.54 and 235,850.28 is: 353,803.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,399 : 1,152,690.54 = 235,850.28 : x
  2. Step 2: Convert to fraction form
    768,399/1,152,690.54 = 235,850.28/x
  3. Step 3: Cross multiply
    768,399x = 1,152,690.54 × 235,850.28
  4. Step 4: Simplify right side
    768,399x = 271,862,386,612.35
  5. Step 5: Solve for x
    x = 271,862,386,612.35/768,399
  6. Step 6: Final answer
    x = 353,803.67

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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.