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Finding the Fourth Proportional to 438,787.64, 658,051.05 and 186,064.40

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Solution

The fourth proportional to 438,787.64, 658,051.05 and 186,064.40 is: 279,041.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,787.64 : 658,051.05 = 186,064.40 : x
  2. Step 2: Convert to fraction form
    438,787.64/658,051.05 = 186,064.40/x
  3. Step 3: Cross multiply
    438,787.64x = 658,051.05 × 186,064.40
  4. Step 4: Simplify right side
    438,787.64x = 122,439,873,787.62
  5. Step 5: Solve for x
    x = 122,439,873,787.62/438,787.64
  6. Step 6: Final answer
    x = 279,041.30

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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.