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Finding the Fourth Proportional to 492,121.93, 738,112.80 and 155,118.79

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Solution

The fourth proportional to 492,121.93, 738,112.80 and 155,118.79 is: 232,656.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,121.93 : 738,112.80 = 155,118.79 : x
  2. Step 2: Convert to fraction form
    492,121.93/738,112.80 = 155,118.79/x
  3. Step 3: Cross multiply
    492,121.93x = 738,112.80 × 155,118.79
  4. Step 4: Simplify right side
    492,121.93x = 114,495,161,116.75
  5. Step 5: Solve for x
    x = 114,495,161,116.75/492,121.93
  6. Step 6: Final answer
    x = 232,656.08

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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.