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Finding the Fourth Proportional to 213,903, 295,263.90 and 124,479

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Solution

The fourth proportional to 213,903, 295,263.90 and 124,479 is: 171,826.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,903 : 295,263.90 = 124,479 : x
  2. Step 2: Convert to fraction form
    213,903/295,263.90 = 124,479/x
  3. Step 3: Cross multiply
    213,903x = 295,263.90 × 124,479
  4. Step 4: Simplify right side
    213,903x = 36,754,155,008.10
  5. Step 5: Solve for x
    x = 36,754,155,008.10/213,903
  6. Step 6: Final answer
    x = 171,826.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.