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Finding the Fourth Proportional to 348,901.60, 523,352.40 and 86,245.60

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Solution

The fourth proportional to 348,901.60, 523,352.40 and 86,245.60 is: 129,368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,901.60 : 523,352.40 = 86,245.60 : x
  2. Step 2: Convert to fraction form
    348,901.60/523,352.40 = 86,245.60/x
  3. Step 3: Cross multiply
    348,901.60x = 523,352.40 × 86,245.60
  4. Step 4: Simplify right side
    348,901.60x = 45,136,841,749.44
  5. Step 5: Solve for x
    x = 45,136,841,749.44/348,901.60
  6. Step 6: Final answer
    x = 129,368.40

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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.