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Finding the Fourth Proportional to 317,510.21, 438,086.68 and 179,692.32

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Solution

The fourth proportional to 317,510.21, 438,086.68 and 179,692.32 is: 247,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,510.21 : 438,086.68 = 179,692.32 : x
  2. Step 2: Convert to fraction form
    317,510.21/438,086.68 = 179,692.32/x
  3. Step 3: Cross multiply
    317,510.21x = 438,086.68 × 179,692.32
  4. Step 4: Simplify right side
    317,510.21x = 78,720,813,083.89
  5. Step 5: Solve for x
    x = 78,720,813,083.89/317,510.21
  6. Step 6: Final answer
    x = 247,931.59

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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.