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Finding the Fourth Proportional to 442,869.02, 611,141.66 and 261,639.32

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Solution

The fourth proportional to 442,869.02, 611,141.66 and 261,639.32 is: 361,051.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,869.02 : 611,141.66 = 261,639.32 : x
  2. Step 2: Convert to fraction form
    442,869.02/611,141.66 = 261,639.32/x
  3. Step 3: Cross multiply
    442,869.02x = 611,141.66 × 261,639.32
  4. Step 4: Simplify right side
    442,869.02x = 159,898,684,963.31
  5. Step 5: Solve for x
    x = 159,898,684,963.31/442,869.02
  6. Step 6: Final answer
    x = 361,051.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.