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Finding the Fourth Proportional to 318,779.46, 439,916.30 and 175,539.77

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Solution

The fourth proportional to 318,779.46, 439,916.30 and 175,539.77 is: 242,245.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,779.46 : 439,916.30 = 175,539.77 : x
  2. Step 2: Convert to fraction form
    318,779.46/439,916.30 = 175,539.77/x
  3. Step 3: Cross multiply
    318,779.46x = 439,916.30 × 175,539.77
  4. Step 4: Simplify right side
    318,779.46x = 77,222,805,351.93
  5. Step 5: Solve for x
    x = 77,222,805,351.93/318,779.46
  6. Step 6: Final answer
    x = 242,245.24

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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.