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Finding the Fourth Proportional to 385,032.52, 578,051.80 and 309,171.58

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Solution

The fourth proportional to 385,032.52, 578,051.80 and 309,171.58 is: 464,161.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,032.52 : 578,051.80 = 309,171.58 : x
  2. Step 2: Convert to fraction form
    385,032.52/578,051.80 = 309,171.58/x
  3. Step 3: Cross multiply
    385,032.52x = 578,051.80 × 309,171.58
  4. Step 4: Simplify right side
    385,032.52x = 178,717,188,327.84
  5. Step 5: Solve for x
    x = 178,717,188,327.84/385,032.52
  6. Step 6: Final answer
    x = 464,161.28

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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.