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Finding the Fourth Proportional to 374,105.70, 561,209.34 and 121,303.74

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Solution

The fourth proportional to 374,105.70, 561,209.34 and 121,303.74 is: 181,972.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,105.70 : 561,209.34 = 121,303.74 : x
  2. Step 2: Convert to fraction form
    374,105.70/561,209.34 = 121,303.74/x
  3. Step 3: Cross multiply
    374,105.70x = 561,209.34 × 121,303.74
  4. Step 4: Simplify right side
    374,105.70x = 68,076,791,864.93
  5. Step 5: Solve for x
    x = 68,076,791,864.93/374,105.70
  6. Step 6: Final answer
    x = 181,972.08

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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.