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Finding the Fourth Proportional to 374,889.60, 562,409.28 and 138,233.28

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Solution

The fourth proportional to 374,889.60, 562,409.28 and 138,233.28 is: 207,377.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,889.60 : 562,409.28 = 138,233.28 : x
  2. Step 2: Convert to fraction form
    374,889.60/562,409.28 = 138,233.28/x
  3. Step 3: Cross multiply
    374,889.60x = 562,409.28 × 138,233.28
  4. Step 4: Simplify right side
    374,889.60x = 77,743,679,476.84
  5. Step 5: Solve for x
    x = 77,743,679,476.84/374,889.60
  6. Step 6: Final answer
    x = 207,377.53

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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.