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Finding the Fourth Proportional to 349,281.50, 482,009.10 and 198,378.50

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Solution

The fourth proportional to 349,281.50, 482,009.10 and 198,378.50 is: 273,762.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,281.50 : 482,009.10 = 198,378.50 : x
  2. Step 2: Convert to fraction form
    349,281.50/482,009.10 = 198,378.50/x
  3. Step 3: Cross multiply
    349,281.50x = 482,009.10 × 198,378.50
  4. Step 4: Simplify right side
    349,281.50x = 95,620,242,244.35
  5. Step 5: Solve for x
    x = 95,620,242,244.35/349,281.50
  6. Step 6: Final answer
    x = 273,762.69

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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.