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Finding the Fourth Proportional to 235,657.96, 353,276.16 and 85,792.66

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Solution

The fourth proportional to 235,657.96, 353,276.16 and 85,792.66 is: 128,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,657.96 : 353,276.16 = 85,792.66 : x
  2. Step 2: Convert to fraction form
    235,657.96/353,276.16 = 85,792.66/x
  3. Step 3: Cross multiply
    235,657.96x = 353,276.16 × 85,792.66
  4. Step 4: Simplify right side
    235,657.96x = 30,308,501,480.99
  5. Step 5: Solve for x
    x = 30,308,501,480.99/235,657.96
  6. Step 6: Final answer
    x = 128,612.25

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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.