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Finding the Fourth Proportional to 554,544.60, 831,816.69 and 217,743.72

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Solution

The fourth proportional to 554,544.60, 831,816.69 and 217,743.72 is: 326,615.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,544.60 : 831,816.69 = 217,743.72 : x
  2. Step 2: Convert to fraction form
    554,544.60/831,816.69 = 217,743.72/x
  3. Step 3: Cross multiply
    554,544.60x = 831,816.69 × 217,743.72
  4. Step 4: Simplify right side
    554,544.60x = 181,122,860,438.69
  5. Step 5: Solve for x
    x = 181,122,860,438.69/554,544.60
  6. Step 6: Final answer
    x = 326,615.50

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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.