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Finding the Fourth Proportional to 371,143.70, 556,715.55 and 317,999.60

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Solution

The fourth proportional to 371,143.70, 556,715.55 and 317,999.60 is: 476,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,143.70 : 556,715.55 = 317,999.60 : x
  2. Step 2: Convert to fraction form
    371,143.70/556,715.55 = 317,999.60/x
  3. Step 3: Cross multiply
    371,143.70x = 556,715.55 × 317,999.60
  4. Step 4: Simplify right side
    371,143.70x = 177,035,322,213.78
  5. Step 5: Solve for x
    x = 177,035,322,213.78/371,143.70
  6. Step 6: Final answer
    x = 476,999.40

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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.