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Finding the Fourth Proportional to 379,864.68, 569,831.34 and 109,988.88

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Solution

The fourth proportional to 379,864.68, 569,831.34 and 109,988.88 is: 164,993.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,864.68 : 569,831.34 = 109,988.88 : x
  2. Step 2: Convert to fraction form
    379,864.68/569,831.34 = 109,988.88/x
  3. Step 3: Cross multiply
    379,864.68x = 569,831.34 × 109,988.88
  4. Step 4: Simplify right side
    379,864.68x = 62,675,110,875.50
  5. Step 5: Solve for x
    x = 62,675,110,875.50/379,864.68
  6. Step 6: Final answer
    x = 164,993.26

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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.