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Finding the Fourth Proportional to 540,172.19, 745,417.49 and 298,449.59

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Solution

The fourth proportional to 540,172.19, 745,417.49 and 298,449.59 is: 411,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,172.19 : 745,417.49 = 298,449.59 : x
  2. Step 2: Convert to fraction form
    540,172.19/745,417.49 = 298,449.59/x
  3. Step 3: Cross multiply
    540,172.19x = 745,417.49 × 298,449.59
  4. Step 4: Simplify right side
    540,172.19x = 222,469,539,049.99
  5. Step 5: Solve for x
    x = 222,469,539,049.99/540,172.19
  6. Step 6: Final answer
    x = 411,849.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.