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Finding the Fourth Proportional to 612,650.32, 918,975.89 and 191,959

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Solution

The fourth proportional to 612,650.32, 918,975.89 and 191,959 is: 287,938.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,650.32 : 918,975.89 = 191,959 : x
  2. Step 2: Convert to fraction form
    612,650.32/918,975.89 = 191,959/x
  3. Step 3: Cross multiply
    612,650.32x = 918,975.89 × 191,959
  4. Step 4: Simplify right side
    612,650.32x = 176,405,692,868.51
  5. Step 5: Solve for x
    x = 176,405,692,868.51/612,650.32
  6. Step 6: Final answer
    x = 287,938.63

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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.