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Finding the Fourth Proportional to 387,414.90, 581,029.83 and 162,779.58

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Solution

The fourth proportional to 387,414.90, 581,029.83 and 162,779.58 is: 244,130.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,414.90 : 581,029.83 = 162,779.58 : x
  2. Step 2: Convert to fraction form
    387,414.90/581,029.83 = 162,779.58/x
  3. Step 3: Cross multiply
    387,414.90x = 581,029.83 × 162,779.58
  4. Step 4: Simplify right side
    387,414.90x = 94,579,791,694.87
  5. Step 5: Solve for x
    x = 94,579,791,694.87/387,414.90
  6. Step 6: Final answer
    x = 244,130.50

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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.