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Finding the Fourth Proportional to 389,840.76, 537,950.22 and 220,091.64

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Solution

The fourth proportional to 389,840.76, 537,950.22 and 220,091.64 is: 303,709.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,840.76 : 537,950.22 = 220,091.64 : x
  2. Step 2: Convert to fraction form
    389,840.76/537,950.22 = 220,091.64/x
  3. Step 3: Cross multiply
    389,840.76x = 537,950.22 × 220,091.64
  4. Step 4: Simplify right side
    389,840.76x = 118,398,346,158.16
  5. Step 5: Solve for x
    x = 118,398,346,158.16/389,840.76
  6. Step 6: Final answer
    x = 303,709.51

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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.