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Finding the Fourth Proportional to 329,121.20, 493,681.80 and 303,460.40

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Solution

The fourth proportional to 329,121.20, 493,681.80 and 303,460.40 is: 455,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,121.20 : 493,681.80 = 303,460.40 : x
  2. Step 2: Convert to fraction form
    329,121.20/493,681.80 = 303,460.40/x
  3. Step 3: Cross multiply
    329,121.20x = 493,681.80 × 303,460.40
  4. Step 4: Simplify right side
    329,121.20x = 149,812,876,500.72
  5. Step 5: Solve for x
    x = 149,812,876,500.72/329,121.20
  6. Step 6: Final answer
    x = 455,190.60

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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.