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Finding the Fourth Proportional to 209,327.20, 313,893.60 and 90,937.60

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Solution

The fourth proportional to 209,327.20, 313,893.60 and 90,937.60 is: 136,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,327.20 : 313,893.60 = 90,937.60 : x
  2. Step 2: Convert to fraction form
    209,327.20/313,893.60 = 90,937.60/x
  3. Step 3: Cross multiply
    209,327.20x = 313,893.60 × 90,937.60
  4. Step 4: Simplify right side
    209,327.20x = 28,544,730,639.36
  5. Step 5: Solve for x
    x = 28,544,730,639.36/209,327.20
  6. Step 6: Final answer
    x = 136,364.17

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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.