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Finding the Fourth Proportional to 385,601.07, 578,429.15 and 119,327.34

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Solution

The fourth proportional to 385,601.07, 578,429.15 and 119,327.34 is: 178,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,601.07 : 578,429.15 = 119,327.34 : x
  2. Step 2: Convert to fraction form
    385,601.07/578,429.15 = 119,327.34/x
  3. Step 3: Cross multiply
    385,601.07x = 578,429.15 × 119,327.34
  4. Step 4: Simplify right side
    385,601.07x = 69,022,411,251.32
  5. Step 5: Solve for x
    x = 69,022,411,251.32/385,601.07
  6. Step 6: Final answer
    x = 178,999.53

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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.