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Finding the Fourth Proportional to 357,512.64, 536,268.45 and 91,273.20

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Solution

The fourth proportional to 357,512.64, 536,268.45 and 91,273.20 is: 136,909.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,512.64 : 536,268.45 = 91,273.20 : x
  2. Step 2: Convert to fraction form
    357,512.64/536,268.45 = 91,273.20/x
  3. Step 3: Cross multiply
    357,512.64x = 536,268.45 × 91,273.20
  4. Step 4: Simplify right side
    357,512.64x = 48,946,937,490.54
  5. Step 5: Solve for x
    x = 48,946,937,490.54/357,512.64
  6. Step 6: Final answer
    x = 136,909.67

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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.