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Finding the Fourth Proportional to 540,111.85, 809,641.22 and 215,803.26

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Solution

The fourth proportional to 540,111.85, 809,641.22 and 215,803.26 is: 323,494.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,111.85 : 809,641.22 = 215,803.26 : x
  2. Step 2: Convert to fraction form
    540,111.85/809,641.22 = 215,803.26/x
  3. Step 3: Cross multiply
    540,111.85x = 809,641.22 × 215,803.26
  4. Step 4: Simplify right side
    540,111.85x = 174,723,213,627.36
  5. Step 5: Solve for x
    x = 174,723,213,627.36/540,111.85
  6. Step 6: Final answer
    x = 323,494.50

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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.