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Finding the Fourth Proportional to 231,070.40, 346,605.60 and 81,479.60

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Solution

The fourth proportional to 231,070.40, 346,605.60 and 81,479.60 is: 122,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,070.40 : 346,605.60 = 81,479.60 : x
  2. Step 2: Convert to fraction form
    231,070.40/346,605.60 = 81,479.60/x
  3. Step 3: Cross multiply
    231,070.40x = 346,605.60 × 81,479.60
  4. Step 4: Simplify right side
    231,070.40x = 28,241,285,645.76
  5. Step 5: Solve for x
    x = 28,241,285,645.76/231,070.40
  6. Step 6: Final answer
    x = 122,219.40

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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.