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Finding the Fourth Proportional to 317,293.12, 437,878.32 and 189,944.08

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Solution

The fourth proportional to 317,293.12, 437,878.32 and 189,944.08 is: 262,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,293.12 : 437,878.32 = 189,944.08 : x
  2. Step 2: Convert to fraction form
    317,293.12/437,878.32 = 189,944.08/x
  3. Step 3: Cross multiply
    317,293.12x = 437,878.32 × 189,944.08
  4. Step 4: Simplify right side
    317,293.12x = 83,172,394,644.35
  5. Step 5: Solve for x
    x = 83,172,394,644.35/317,293.12
  6. Step 6: Final answer
    x = 262,131.10

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1.5x scale

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.