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Finding the Fourth Proportional to 357,187.33, 535,674.07 and 143,886.79

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Solution

The fourth proportional to 357,187.33, 535,674.07 and 143,886.79 is: 215,787.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,187.33 : 535,674.07 = 143,886.79 : x
  2. Step 2: Convert to fraction form
    357,187.33/535,674.07 = 143,886.79/x
  3. Step 3: Cross multiply
    357,187.33x = 535,674.07 × 143,886.79
  4. Step 4: Simplify right side
    357,187.33x = 77,076,419,020.73
  5. Step 5: Solve for x
    x = 77,076,419,020.73/357,187.33
  6. Step 6: Final answer
    x = 215,787.11

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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.