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Finding the Fourth Proportional to 320,437.70, 480,138.15 and 201,896.90

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Solution

The fourth proportional to 320,437.70, 480,138.15 and 201,896.90 is: 302,518.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,437.70 : 480,138.15 = 201,896.90 : x
  2. Step 2: Convert to fraction form
    320,437.70/480,138.15 = 201,896.90/x
  3. Step 3: Cross multiply
    320,437.70x = 480,138.15 × 201,896.90
  4. Step 4: Simplify right side
    320,437.70x = 96,938,404,056.74
  5. Step 5: Solve for x
    x = 96,938,404,056.74/320,437.70
  6. Step 6: Final answer
    x = 302,518.72

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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.