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Finding the Fourth Proportional to 439,875.65, 659,801.93 and 140,374.51

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Solution

The fourth proportional to 439,875.65, 659,801.93 and 140,374.51 is: 210,558.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,875.65 : 659,801.93 = 140,374.51 : x
  2. Step 2: Convert to fraction form
    439,875.65/659,801.93 = 140,374.51/x
  3. Step 3: Cross multiply
    439,875.65x = 659,801.93 × 140,374.51
  4. Step 4: Simplify right side
    439,875.65x = 92,619,372,620.80
  5. Step 5: Solve for x
    x = 92,619,372,620.80/439,875.65
  6. Step 6: Final answer
    x = 210,558.08

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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.