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Finding the Fourth Proportional to 387,708.40, 535,011.10 and 234,831.44

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Solution

The fourth proportional to 387,708.40, 535,011.10 and 234,831.44 is: 324,051.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,708.40 : 535,011.10 = 234,831.44 : x
  2. Step 2: Convert to fraction form
    387,708.40/535,011.10 = 234,831.44/x
  3. Step 3: Cross multiply
    387,708.40x = 535,011.10 × 234,831.44
  4. Step 4: Simplify right side
    387,708.40x = 125,637,427,028.98
  5. Step 5: Solve for x
    x = 125,637,427,028.98/387,708.40
  6. Step 6: Final answer
    x = 324,051.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.