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Finding the Fourth Proportional to 389,690.95, 537,620.50 and 226,319.64

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Solution

The fourth proportional to 389,690.95, 537,620.50 and 226,319.64 is: 312,232.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,690.95 : 537,620.50 = 226,319.64 : x
  2. Step 2: Convert to fraction form
    389,690.95/537,620.50 = 226,319.64/x
  3. Step 3: Cross multiply
    389,690.95x = 537,620.50 × 226,319.64
  4. Step 4: Simplify right side
    389,690.95x = 121,674,076,885.02
  5. Step 5: Solve for x
    x = 121,674,076,885.02/389,690.95
  6. Step 6: Final answer
    x = 312,232.24

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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.