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Finding the Fourth Proportional to 317,648.96, 438,362.63 and 174,409.57

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Solution

The fourth proportional to 317,648.96, 438,362.63 and 174,409.57 is: 240,689.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,648.96 : 438,362.63 = 174,409.57 : x
  2. Step 2: Convert to fraction form
    317,648.96/438,362.63 = 174,409.57/x
  3. Step 3: Cross multiply
    317,648.96x = 438,362.63 × 174,409.57
  4. Step 4: Simplify right side
    317,648.96x = 76,454,639,113.36
  5. Step 5: Solve for x
    x = 76,454,639,113.36/317,648.96
  6. Step 6: Final answer
    x = 240,689.09

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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.