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Finding the Fourth Proportional to 207,859.29, 286,824.32 and 153,440.37

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Solution

The fourth proportional to 207,859.29, 286,824.32 and 153,440.37 is: 211,731.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,859.29 : 286,824.32 = 153,440.37 : x
  2. Step 2: Convert to fraction form
    207,859.29/286,824.32 = 153,440.37/x
  3. Step 3: Cross multiply
    207,859.29x = 286,824.32 × 153,440.37
  4. Step 4: Simplify right side
    207,859.29x = 44,010,429,785.80
  5. Step 5: Solve for x
    x = 44,010,429,785.80/207,859.29
  6. Step 6: Final answer
    x = 211,731.84

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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.