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Finding the Fourth Proportional to 342,820.20, 514,521.90 and 153,571.80

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Solution

The fourth proportional to 342,820.20, 514,521.90 and 153,571.80 is: 230,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,820.20 : 514,521.90 = 153,571.80 : x
  2. Step 2: Convert to fraction form
    342,820.20/514,521.90 = 153,571.80/x
  3. Step 3: Cross multiply
    342,820.20x = 514,521.90 × 153,571.80
  4. Step 4: Simplify right side
    342,820.20x = 79,016,054,322.42
  5. Step 5: Solve for x
    x = 79,016,054,322.42/342,820.20
  6. Step 6: Final answer
    x = 230,488.33

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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.