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Finding the Fourth Proportional to 223,618.60, 335,168.70 and 90,411.40

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Solution

The fourth proportional to 223,618.60, 335,168.70 and 90,411.40 is: 135,512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,618.60 : 335,168.70 = 90,411.40 : x
  2. Step 2: Convert to fraction form
    223,618.60/335,168.70 = 90,411.40/x
  3. Step 3: Cross multiply
    223,618.60x = 335,168.70 × 90,411.40
  4. Step 4: Simplify right side
    223,618.60x = 30,303,071,403.18
  5. Step 5: Solve for x
    x = 30,303,071,403.18/223,618.60
  6. Step 6: Final answer
    x = 135,512.30

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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.