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Finding the Fourth Proportional to 554,141.40, 831,212.10 and 317,289.30

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Solution

The fourth proportional to 554,141.40, 831,212.10 and 317,289.30 is: 475,933.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,141.40 : 831,212.10 = 317,289.30 : x
  2. Step 2: Convert to fraction form
    554,141.40/831,212.10 = 317,289.30/x
  3. Step 3: Cross multiply
    554,141.40x = 831,212.10 × 317,289.30
  4. Step 4: Simplify right side
    554,141.40x = 263,734,705,360.53
  5. Step 5: Solve for x
    x = 263,734,705,360.53/554,141.40
  6. Step 6: Final answer
    x = 475,933.95

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Similar ratio
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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.