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Finding the Fourth Proportional to 374,461.60, 561,692.40 and 372,128.80

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Solution

The fourth proportional to 374,461.60, 561,692.40 and 372,128.80 is: 558,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,461.60 : 561,692.40 = 372,128.80 : x
  2. Step 2: Convert to fraction form
    374,461.60/561,692.40 = 372,128.80/x
  3. Step 3: Cross multiply
    374,461.60x = 561,692.40 × 372,128.80
  4. Step 4: Simplify right side
    374,461.60x = 209,021,918,781.12
  5. Step 5: Solve for x
    x = 209,021,918,781.12/374,461.60
  6. Step 6: Final answer
    x = 558,193.20

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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.