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Finding the Fourth Proportional to 201,432.30, 301,820.40 and 148,288.20

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Solution

The fourth proportional to 201,432.30, 301,820.40 and 148,288.20 is: 222,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,432.30 : 301,820.40 = 148,288.20 : x
  2. Step 2: Convert to fraction form
    201,432.30/301,820.40 = 148,288.20/x
  3. Step 3: Cross multiply
    201,432.30x = 301,820.40 × 148,288.20
  4. Step 4: Simplify right side
    201,432.30x = 44,756,403,839.28
  5. Step 5: Solve for x
    x = 44,756,403,839.28/201,432.30
  6. Step 6: Final answer
    x = 222,190.80

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1.5x scale

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.