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Finding the Fourth Proportional to 317,810.40, 438,617.40 and 183,674.40

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Solution

The fourth proportional to 317,810.40, 438,617.40 and 183,674.40 is: 253,493.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,810.40 : 438,617.40 = 183,674.40 : x
  2. Step 2: Convert to fraction form
    317,810.40/438,617.40 = 183,674.40/x
  3. Step 3: Cross multiply
    317,810.40x = 438,617.40 × 183,674.40
  4. Step 4: Simplify right side
    317,810.40x = 80,562,787,774.56
  5. Step 5: Solve for x
    x = 80,562,787,774.56/317,810.40
  6. Step 6: Final answer
    x = 253,493.24

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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.