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Finding the Fourth Proportional to 317,228.76, 475,967.70 and 139,611.18

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Solution

The fourth proportional to 317,228.76, 475,967.70 and 139,611.18 is: 209,471.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,228.76 : 475,967.70 = 139,611.18 : x
  2. Step 2: Convert to fraction form
    317,228.76/475,967.70 = 139,611.18/x
  3. Step 3: Cross multiply
    317,228.76x = 475,967.70 × 139,611.18
  4. Step 4: Simplify right side
    317,228.76x = 66,450,412,238.89
  5. Step 5: Solve for x
    x = 66,450,412,238.89/317,228.76
  6. Step 6: Final answer
    x = 209,471.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.