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Finding the Fourth Proportional to 389,508.60, 584,277.48 and 109,018.56

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Solution

The fourth proportional to 389,508.60, 584,277.48 and 109,018.56 is: 163,531.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,508.60 : 584,277.48 = 109,018.56 : x
  2. Step 2: Convert to fraction form
    389,508.60/584,277.48 = 109,018.56/x
  3. Step 3: Cross multiply
    389,508.60x = 584,277.48 × 109,018.56
  4. Step 4: Simplify right side
    389,508.60x = 63,697,089,510.03
  5. Step 5: Solve for x
    x = 63,697,089,510.03/389,508.60
  6. Step 6: Final answer
    x = 163,531.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.