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Finding the Fourth Proportional to 313,417.31, 432,515.89 and 179,281.31

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Solution

The fourth proportional to 313,417.31, 432,515.89 and 179,281.31 is: 247,408.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,417.31 : 432,515.89 = 179,281.31 : x
  2. Step 2: Convert to fraction form
    313,417.31/432,515.89 = 179,281.31/x
  3. Step 3: Cross multiply
    313,417.31x = 432,515.89 × 179,281.31
  4. Step 4: Simplify right side
    313,417.31x = 77,542,016,660.41
  5. Step 5: Solve for x
    x = 77,542,016,660.41/313,417.31
  6. Step 6: Final answer
    x = 247,408.21

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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.