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Finding the Fourth Proportional to 374,092.80, 561,139.20 and 248,121.60

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Solution

The fourth proportional to 374,092.80, 561,139.20 and 248,121.60 is: 372,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,092.80 : 561,139.20 = 248,121.60 : x
  2. Step 2: Convert to fraction form
    374,092.80/561,139.20 = 248,121.60/x
  3. Step 3: Cross multiply
    374,092.80x = 561,139.20 × 248,121.60
  4. Step 4: Simplify right side
    374,092.80x = 139,230,756,126.72
  5. Step 5: Solve for x
    x = 139,230,756,126.72/374,092.80
  6. Step 6: Final answer
    x = 372,182.40

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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.