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Finding the Fourth Proportional to 330,430.15, 495,645.62 and 90,546.07

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Solution

The fourth proportional to 330,430.15, 495,645.62 and 90,546.07 is: 135,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,430.15 : 495,645.62 = 90,546.07 : x
  2. Step 2: Convert to fraction form
    330,430.15/495,645.62 = 90,546.07/x
  3. Step 3: Cross multiply
    330,430.15x = 495,645.62 × 90,546.07
  4. Step 4: Simplify right side
    330,430.15x = 44,878,763,003.71
  5. Step 5: Solve for x
    x = 44,878,763,003.71/330,430.15
  6. Step 6: Final answer
    x = 135,819.21

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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.