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Finding the Fourth Proportional to 374,420.40, 561,630.60 and 368,890.80

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Solution

The fourth proportional to 374,420.40, 561,630.60 and 368,890.80 is: 553,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,420.40 : 561,630.60 = 368,890.80 : x
  2. Step 2: Convert to fraction form
    374,420.40/561,630.60 = 368,890.80/x
  3. Step 3: Cross multiply
    374,420.40x = 561,630.60 × 368,890.80
  4. Step 4: Simplify right side
    374,420.40x = 207,180,361,338.48
  5. Step 5: Solve for x
    x = 207,180,361,338.48/374,420.40
  6. Step 6: Final answer
    x = 553,336.20

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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.