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Finding the Fourth Proportional to 220,563.37, 330,666.94 and 85,557.74

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Solution

The fourth proportional to 220,563.37, 330,666.94 and 85,557.74 is: 128,267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,563.37 : 330,666.94 = 85,557.74 : x
  2. Step 2: Convert to fraction form
    220,563.37/330,666.94 = 85,557.74/x
  3. Step 3: Cross multiply
    220,563.37x = 330,666.94 × 85,557.74
  4. Step 4: Simplify right side
    220,563.37x = 28,291,114,211.89
  5. Step 5: Solve for x
    x = 28,291,114,211.89/220,563.37
  6. Step 6: Final answer
    x = 128,267.51

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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.