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Finding the Fourth Proportional to 374,430.78, 561,646.20 and 125,112.78

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Solution

The fourth proportional to 374,430.78, 561,646.20 and 125,112.78 is: 187,669.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,430.78 : 561,646.20 = 125,112.78 : x
  2. Step 2: Convert to fraction form
    374,430.78/561,646.20 = 125,112.78/x
  3. Step 3: Cross multiply
    374,430.78x = 561,646.20 × 125,112.78
  4. Step 4: Simplify right side
    374,430.78x = 70,269,117,458.44
  5. Step 5: Solve for x
    x = 70,269,117,458.44/374,430.78
  6. Step 6: Final answer
    x = 187,669.18

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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.