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Finding the Fourth Proportional to 389,806.88, 584,710.34 and 94,318.88

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Solution

The fourth proportional to 389,806.88, 584,710.34 and 94,318.88 is: 141,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,806.88 : 584,710.34 = 94,318.88 : x
  2. Step 2: Convert to fraction form
    389,806.88/584,710.34 = 94,318.88/x
  3. Step 3: Cross multiply
    389,806.88x = 584,710.34 × 94,318.88
  4. Step 4: Simplify right side
    389,806.88x = 55,149,220,998.07
  5. Step 5: Solve for x
    x = 55,149,220,998.07/389,806.88
  6. Step 6: Final answer
    x = 141,478.32

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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.