Home / 338,432.20-507,302.70-198,118.60

Finding the Fourth Proportional to 338,432.20, 507,302.70 and 198,118.60

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Solution

The fourth proportional to 338,432.20, 507,302.70 and 198,118.60 is: 296,975.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,432.20 : 507,302.70 = 198,118.60 : x
  2. Step 2: Convert to fraction form
    338,432.20/507,302.70 = 198,118.60/x
  3. Step 3: Cross multiply
    338,432.20x = 507,302.70 × 198,118.60
  4. Step 4: Simplify right side
    338,432.20x = 100,506,100,700.22
  5. Step 5: Solve for x
    x = 100,506,100,700.22/338,432.20
  6. Step 6: Final answer
    x = 296,975.59

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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.