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Finding the Fourth Proportional to 291,230.09, 401,831.03 and 163,859.21

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Solution

The fourth proportional to 291,230.09, 401,831.03 and 163,859.21 is: 226,088.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,230.09 : 401,831.03 = 163,859.21 : x
  2. Step 2: Convert to fraction form
    291,230.09/401,831.03 = 163,859.21/x
  3. Step 3: Cross multiply
    291,230.09x = 401,831.03 × 163,859.21
  4. Step 4: Simplify right side
    291,230.09x = 65,843,712,300.84
  5. Step 5: Solve for x
    x = 65,843,712,300.84/291,230.09
  6. Step 6: Final answer
    x = 226,088.29

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1.5x scale

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.