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Finding the Fourth Proportional to 288,156.02, 397,639.13 and 160,839.81

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Solution

The fourth proportional to 288,156.02, 397,639.13 and 160,839.81 is: 221,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,156.02 : 397,639.13 = 160,839.81 : x
  2. Step 2: Convert to fraction form
    288,156.02/397,639.13 = 160,839.81/x
  3. Step 3: Cross multiply
    288,156.02x = 397,639.13 × 160,839.81
  4. Step 4: Simplify right side
    288,156.02x = 63,956,201,313.57
  5. Step 5: Solve for x
    x = 63,956,201,313.57/288,156.02
  6. Step 6: Final answer
    x = 221,949.91

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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.