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Finding the Fourth Proportional to 389,712.69, 537,883.61 and 228,652.29

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Solution

The fourth proportional to 389,712.69, 537,883.61 and 228,652.29 is: 315,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,712.69 : 537,883.61 = 228,652.29 : x
  2. Step 2: Convert to fraction form
    389,712.69/537,883.61 = 228,652.29/x
  3. Step 3: Cross multiply
    389,712.69x = 537,883.61 × 228,652.29
  4. Step 4: Simplify right side
    389,712.69x = 122,988,318,036.71
  5. Step 5: Solve for x
    x = 122,988,318,036.71/389,712.69
  6. Step 6: Final answer
    x = 315,587.15

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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.