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Finding the Fourth Proportional to 540,015.81, 745,217.04 and 298,315.18

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Solution

The fourth proportional to 540,015.81, 745,217.04 and 298,315.18 is: 411,672.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,015.81 : 745,217.04 = 298,315.18 : x
  2. Step 2: Convert to fraction form
    540,015.81/745,217.04 = 298,315.18/x
  3. Step 3: Cross multiply
    540,015.81x = 745,217.04 × 298,315.18
  4. Step 4: Simplify right side
    540,015.81x = 222,309,555,426.67
  5. Step 5: Solve for x
    x = 222,309,555,426.67/540,015.81
  6. Step 6: Final answer
    x = 411,672.31

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Double scale
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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.