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Finding the Fourth Proportional to 389,441.70, 584,259.75 and 108,956.52

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Solution

The fourth proportional to 389,441.70, 584,259.75 and 108,956.52 is: 163,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,441.70 : 584,259.75 = 108,956.52 : x
  2. Step 2: Convert to fraction form
    389,441.70/584,259.75 = 108,956.52/x
  3. Step 3: Cross multiply
    389,441.70x = 584,259.75 × 108,956.52
  4. Step 4: Simplify right side
    389,441.70x = 63,658,909,136.07
  5. Step 5: Solve for x
    x = 63,658,909,136.07/389,441.70
  6. Step 6: Final answer
    x = 163,461.97

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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.