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Finding the Fourth Proportional to 215,307.71, 296,816.70 and 151,447.31

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Solution

The fourth proportional to 215,307.71, 296,816.70 and 151,447.31 is: 208,780.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,307.71 : 296,816.70 = 151,447.31 : x
  2. Step 2: Convert to fraction form
    215,307.71/296,816.70 = 151,447.31/x
  3. Step 3: Cross multiply
    215,307.71x = 296,816.70 × 151,447.31
  4. Step 4: Simplify right side
    215,307.71x = 44,952,089,293.99
  5. Step 5: Solve for x
    x = 44,952,089,293.99/215,307.71
  6. Step 6: Final answer
    x = 208,780.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.