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Finding the Fourth Proportional to 374,468.80, 561,703.20 and 187,412.80

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Solution

The fourth proportional to 374,468.80, 561,703.20 and 187,412.80 is: 281,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,468.80 : 561,703.20 = 187,412.80 : x
  2. Step 2: Convert to fraction form
    374,468.80/561,703.20 = 187,412.80/x
  3. Step 3: Cross multiply
    374,468.80x = 561,703.20 × 187,412.80
  4. Step 4: Simplify right side
    374,468.80x = 105,270,369,480.96
  5. Step 5: Solve for x
    x = 105,270,369,480.96/374,468.80
  6. Step 6: Final answer
    x = 281,119.20

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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.