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Finding the Fourth Proportional to 348,903.60, 523,355.40 and 86,247.60

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Solution

The fourth proportional to 348,903.60, 523,355.40 and 86,247.60 is: 129,371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,903.60 : 523,355.40 = 86,247.60 : x
  2. Step 2: Convert to fraction form
    348,903.60/523,355.40 = 86,247.60/x
  3. Step 3: Cross multiply
    348,903.60x = 523,355.40 × 86,247.60
  4. Step 4: Simplify right side
    348,903.60x = 45,138,147,197.04
  5. Step 5: Solve for x
    x = 45,138,147,197.04/348,903.60
  6. Step 6: Final answer
    x = 129,371.40

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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.