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Finding the Fourth Proportional to 397,112.70, 595,669.05 and 355,122.30

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Solution

The fourth proportional to 397,112.70, 595,669.05 and 355,122.30 is: 532,683.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,112.70 : 595,669.05 = 355,122.30 : x
  2. Step 2: Convert to fraction form
    397,112.70/595,669.05 = 355,122.30/x
  3. Step 3: Cross multiply
    397,112.70x = 595,669.05 × 355,122.30
  4. Step 4: Simplify right side
    397,112.70x = 211,535,363,074.82
  5. Step 5: Solve for x
    x = 211,535,363,074.82/397,112.70
  6. Step 6: Final answer
    x = 532,683.45

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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.