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Finding the Fourth Proportional to 374,448.70, 561,673.05 and 285,875.20

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Solution

The fourth proportional to 374,448.70, 561,673.05 and 285,875.20 is: 428,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,448.70 : 561,673.05 = 285,875.20 : x
  2. Step 2: Convert to fraction form
    374,448.70/561,673.05 = 285,875.20/x
  3. Step 3: Cross multiply
    374,448.70x = 561,673.05 × 285,875.20
  4. Step 4: Simplify right side
    374,448.70x = 160,568,395,503.36
  5. Step 5: Solve for x
    x = 160,568,395,503.36/374,448.70
  6. Step 6: Final answer
    x = 428,812.80

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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.