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Finding the Fourth Proportional to 387,321.40, 580,866.90 and 150,527.80

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Solution

The fourth proportional to 387,321.40, 580,866.90 and 150,527.80 is: 225,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,321.40 : 580,866.90 = 150,527.80 : x
  2. Step 2: Convert to fraction form
    387,321.40/580,866.90 = 150,527.80/x
  3. Step 3: Cross multiply
    387,321.40x = 580,866.90 × 150,527.80
  4. Step 4: Simplify right side
    387,321.40x = 87,436,616,549.82
  5. Step 5: Solve for x
    x = 87,436,616,549.82/387,321.40
  6. Step 6: Final answer
    x = 225,746.93

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1.5x scale

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.