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Finding the Fourth Proportional to 212,562.83, 318,835.01 and 79,444.23

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Solution

The fourth proportional to 212,562.83, 318,835.01 and 79,444.23 is: 119,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,562.83 : 318,835.01 = 79,444.23 : x
  2. Step 2: Convert to fraction form
    212,562.83/318,835.01 = 79,444.23/x
  3. Step 3: Cross multiply
    212,562.83x = 318,835.01 × 79,444.23
  4. Step 4: Simplify right side
    212,562.83x = 25,329,602,065.10
  5. Step 5: Solve for x
    x = 25,329,602,065.10/212,562.83
  6. Step 6: Final answer
    x = 119,162.90

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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.