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Finding the Fourth Proportional to 389,385.92, 537,251 and 228,154.36

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Solution

The fourth proportional to 389,385.92, 537,251 and 228,154.36 is: 314,793.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,385.92 : 537,251 = 228,154.36 : x
  2. Step 2: Convert to fraction form
    389,385.92/537,251 = 228,154.36/x
  3. Step 3: Cross multiply
    389,385.92x = 537,251 × 228,154.36
  4. Step 4: Simplify right side
    389,385.92x = 122,576,158,064.36
  5. Step 5: Solve for x
    x = 122,576,158,064.36/389,385.92
  6. Step 6: Final answer
    x = 314,793.50

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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.