Home / 317,814.32-438,586.98-172,621.51

Finding the Fourth Proportional to 317,814.32, 438,586.98 and 172,621.51

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Solution

The fourth proportional to 317,814.32, 438,586.98 and 172,621.51 is: 238,219.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,814.32 : 438,586.98 = 172,621.51 : x
  2. Step 2: Convert to fraction form
    317,814.32/438,586.98 = 172,621.51/x
  3. Step 3: Cross multiply
    317,814.32x = 438,586.98 × 172,621.51
  4. Step 4: Simplify right side
    317,814.32x = 75,709,543,697.90
  5. Step 5: Solve for x
    x = 75,709,543,697.90/317,814.32
  6. Step 6: Final answer
    x = 238,219.42

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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.