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Finding the Fourth Proportional to 288,905.80, 433,185.90 and 148,937.80

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Solution

The fourth proportional to 288,905.80, 433,185.90 and 148,937.80 is: 223,317.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,905.80 : 433,185.90 = 148,937.80 : x
  2. Step 2: Convert to fraction form
    288,905.80/433,185.90 = 148,937.80/x
  3. Step 3: Cross multiply
    288,905.80x = 433,185.90 × 148,937.80
  4. Step 4: Simplify right side
    288,905.80x = 64,517,754,937.02
  5. Step 5: Solve for x
    x = 64,517,754,937.02/288,905.80
  6. Step 6: Final answer
    x = 223,317.62

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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.