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Finding the Fourth Proportional to 357,275.64, 535,505.79 and 143,906.99

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Solution

The fourth proportional to 357,275.64, 535,505.79 and 143,906.99 is: 215,696.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,275.64 : 535,505.79 = 143,906.99 : x
  2. Step 2: Convert to fraction form
    357,275.64/535,505.79 = 143,906.99/x
  3. Step 3: Cross multiply
    357,275.64x = 535,505.79 × 143,906.99
  4. Step 4: Simplify right side
    357,275.64x = 77,063,023,688.94
  5. Step 5: Solve for x
    x = 77,063,023,688.94/357,275.64
  6. Step 6: Final answer
    x = 215,696.27

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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.