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Finding the Fourth Proportional to 304,140.80, 456,211.20 and 137,928.80

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Solution

The fourth proportional to 304,140.80, 456,211.20 and 137,928.80 is: 206,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,140.80 : 456,211.20 = 137,928.80 : x
  2. Step 2: Convert to fraction form
    304,140.80/456,211.20 = 137,928.80/x
  3. Step 3: Cross multiply
    304,140.80x = 456,211.20 × 137,928.80
  4. Step 4: Simplify right side
    304,140.80x = 62,924,663,362.56
  5. Step 5: Solve for x
    x = 62,924,663,362.56/304,140.80
  6. Step 6: Final answer
    x = 206,893.20

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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.