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Finding the Fourth Proportional to 374,448.78, 561,673.20 and 125,130.78

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Solution

The fourth proportional to 374,448.78, 561,673.20 and 125,130.78 is: 187,696.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,448.78 : 561,673.20 = 125,130.78 : x
  2. Step 2: Convert to fraction form
    374,448.78/561,673.20 = 125,130.78/x
  3. Step 3: Cross multiply
    374,448.78x = 561,673.20 × 125,130.78
  4. Step 4: Simplify right side
    374,448.78x = 70,282,605,621.10
  5. Step 5: Solve for x
    x = 70,282,605,621.10/374,448.78
  6. Step 6: Final answer
    x = 187,696.18

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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.