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Finding the Fourth Proportional to 389,750.96, 584,663.61 and 109,267.40

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Solution

The fourth proportional to 389,750.96, 584,663.61 and 109,267.40 is: 163,911.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,750.96 : 584,663.61 = 109,267.40 : x
  2. Step 2: Convert to fraction form
    389,750.96/584,663.61 = 109,267.40/x
  3. Step 3: Cross multiply
    389,750.96x = 584,663.61 × 109,267.40
  4. Step 4: Simplify right side
    389,750.96x = 63,884,672,539.31
  5. Step 5: Solve for x
    x = 63,884,672,539.31/389,750.96
  6. Step 6: Final answer
    x = 163,911.52

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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.