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Finding the Fourth Proportional to 554,439.60, 831,659.40 and 133,715.48

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Solution

The fourth proportional to 554,439.60, 831,659.40 and 133,715.48 is: 200,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,439.60 : 831,659.40 = 133,715.48 : x
  2. Step 2: Convert to fraction form
    554,439.60/831,659.40 = 133,715.48/x
  3. Step 3: Cross multiply
    554,439.60x = 831,659.40 × 133,715.48
  4. Step 4: Simplify right side
    554,439.60x = 111,205,731,709.22
  5. Step 5: Solve for x
    x = 111,205,731,709.22/554,439.60
  6. Step 6: Final answer
    x = 200,573.21

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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.