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Finding the Fourth Proportional to 440,032.70, 660,043.46 and 140,509.49

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Solution

The fourth proportional to 440,032.70, 660,043.46 and 140,509.49 is: 210,762.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,032.70 : 660,043.46 = 140,509.49 : x
  2. Step 2: Convert to fraction form
    440,032.70/660,043.46 = 140,509.49/x
  3. Step 3: Cross multiply
    440,032.70x = 660,043.46 × 140,509.49
  4. Step 4: Simplify right side
    440,032.70x = 92,742,365,939.67
  5. Step 5: Solve for x
    x = 92,742,365,939.67/440,032.70
  6. Step 6: Final answer
    x = 210,762.44

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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.