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Finding the Fourth Proportional to 439,574.84, 659,461.71 and 140,072.48

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Solution

The fourth proportional to 439,574.84, 659,461.71 and 140,072.48 is: 210,140.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,574.84 : 659,461.71 = 140,072.48 : x
  2. Step 2: Convert to fraction form
    439,574.84/659,461.71 = 140,072.48/x
  3. Step 3: Cross multiply
    439,574.84x = 659,461.71 × 140,072.48
  4. Step 4: Simplify right side
    439,574.84x = 92,372,437,184.74
  5. Step 5: Solve for x
    x = 92,372,437,184.74/439,574.84
  6. Step 6: Final answer
    x = 210,140.41

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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.