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Finding the Fourth Proportional to 317,626.86, 438,305.43 and 174,386.10

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Solution

The fourth proportional to 317,626.86, 438,305.43 and 174,386.10 is: 240,642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,626.86 : 438,305.43 = 174,386.10 : x
  2. Step 2: Convert to fraction form
    317,626.86/438,305.43 = 174,386.10/x
  3. Step 3: Cross multiply
    317,626.86x = 438,305.43 × 174,386.10
  4. Step 4: Simplify right side
    317,626.86x = 76,434,374,546.52
  5. Step 5: Solve for x
    x = 76,434,374,546.52/317,626.86
  6. Step 6: Final answer
    x = 240,642.04

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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.