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Finding the Fourth Proportional to 540,065.20, 808,542.60 and 330,113.20

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Solution

The fourth proportional to 540,065.20, 808,542.60 and 330,113.20 is: 494,219.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,065.20 : 808,542.60 = 330,113.20 : x
  2. Step 2: Convert to fraction form
    540,065.20/808,542.60 = 330,113.20/x
  3. Step 3: Cross multiply
    540,065.20x = 808,542.60 × 330,113.20
  4. Step 4: Simplify right side
    540,065.20x = 266,910,585,022.32
  5. Step 5: Solve for x
    x = 266,910,585,022.32/540,065.20
  6. Step 6: Final answer
    x = 494,219.19

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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.