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Finding the Fourth Proportional to 303,521.20, 455,557.20 and 153,865.60

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Solution

The fourth proportional to 303,521.20, 455,557.20 and 153,865.60 is: 230,938.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,521.20 : 455,557.20 = 153,865.60 : x
  2. Step 2: Convert to fraction form
    303,521.20/455,557.20 = 153,865.60/x
  3. Step 3: Cross multiply
    303,521.20x = 455,557.20 × 153,865.60
  4. Step 4: Simplify right side
    303,521.20x = 70,094,581,912.32
  5. Step 5: Solve for x
    x = 70,094,581,912.32/303,521.20
  6. Step 6: Final answer
    x = 230,938.01

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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.