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Finding the Fourth Proportional to 387,660.48, 581,378.40 and 150,950.40

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Solution

The fourth proportional to 387,660.48, 581,378.40 and 150,950.40 is: 226,381.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,660.48 : 581,378.40 = 150,950.40 : x
  2. Step 2: Convert to fraction form
    387,660.48/581,378.40 = 150,950.40/x
  3. Step 3: Cross multiply
    387,660.48x = 581,378.40 × 150,950.40
  4. Step 4: Simplify right side
    387,660.48x = 87,759,302,031.36
  5. Step 5: Solve for x
    x = 87,759,302,031.36/387,660.48
  6. Step 6: Final answer
    x = 226,381.86

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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.