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Finding the Fourth Proportional to 353,420.69, 487,722.68 and 192,276.90

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Solution

The fourth proportional to 353,420.69, 487,722.68 and 192,276.90 is: 265,343.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,420.69 : 487,722.68 = 192,276.90 : x
  2. Step 2: Convert to fraction form
    353,420.69/487,722.68 = 192,276.90/x
  3. Step 3: Cross multiply
    353,420.69x = 487,722.68 × 192,276.90
  4. Step 4: Simplify right side
    353,420.69x = 93,777,801,570.09
  5. Step 5: Solve for x
    x = 93,777,801,570.09/353,420.69
  6. Step 6: Final answer
    x = 265,343.27

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1.5x scale

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.