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Finding the Fourth Proportional to 292,558.66, 438,837.93 and 79,327.78

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Solution

The fourth proportional to 292,558.66, 438,837.93 and 79,327.78 is: 118,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,558.66 : 438,837.93 = 79,327.78 : x
  2. Step 2: Convert to fraction form
    292,558.66/438,837.93 = 79,327.78/x
  3. Step 3: Cross multiply
    292,558.66x = 438,837.93 × 79,327.78
  4. Step 4: Simplify right side
    292,558.66x = 34,812,038,766.70
  5. Step 5: Solve for x
    x = 34,812,038,766.70/292,558.66
  6. Step 6: Final answer
    x = 118,991.65

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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.