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Finding the Fourth Proportional to 389,415.60, 537,508.52 and 228,305.52

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Solution

The fourth proportional to 389,415.60, 537,508.52 and 228,305.52 is: 315,129.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,415.60 : 537,508.52 = 228,305.52 : x
  2. Step 2: Convert to fraction form
    389,415.60/537,508.52 = 228,305.52/x
  3. Step 3: Cross multiply
    389,415.60x = 537,508.52 × 228,305.52
  4. Step 4: Simplify right side
    389,415.60x = 122,716,162,163.03
  5. Step 5: Solve for x
    x = 122,716,162,163.03/389,415.60
  6. Step 6: Final answer
    x = 315,129.03

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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.