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Finding the Fourth Proportional to 389,752.63, 584,645.21 and 123,507.25

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Solution

The fourth proportional to 389,752.63, 584,645.21 and 123,507.25 is: 185,266.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,752.63 : 584,645.21 = 123,507.25 : x
  2. Step 2: Convert to fraction form
    389,752.63/584,645.21 = 123,507.25/x
  3. Step 3: Cross multiply
    389,752.63x = 584,645.21 × 123,507.25
  4. Step 4: Simplify right side
    389,752.63x = 72,207,921,495.24
  5. Step 5: Solve for x
    x = 72,207,921,495.24/389,752.63
  6. Step 6: Final answer
    x = 185,266.03

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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.