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Finding the Fourth Proportional to 317,674.66, 438,405.33 and 190,347.52

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Solution

The fourth proportional to 317,674.66, 438,405.33 and 190,347.52 is: 262,688.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,674.66 : 438,405.33 = 190,347.52 : x
  2. Step 2: Convert to fraction form
    317,674.66/438,405.33 = 190,347.52/x
  3. Step 3: Cross multiply
    317,674.66x = 438,405.33 × 190,347.52
  4. Step 4: Simplify right side
    317,674.66x = 83,449,367,320.28
  5. Step 5: Solve for x
    x = 83,449,367,320.28/317,674.66
  6. Step 6: Final answer
    x = 262,688.15

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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.