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Finding the Fourth Proportional to 238,762.64, 329,476.20 and 138,175.76

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Solution

The fourth proportional to 238,762.64, 329,476.20 and 138,175.76 is: 190,673.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,762.64 : 329,476.20 = 138,175.76 : x
  2. Step 2: Convert to fraction form
    238,762.64/329,476.20 = 138,175.76/x
  3. Step 3: Cross multiply
    238,762.64x = 329,476.20 × 138,175.76
  4. Step 4: Simplify right side
    238,762.64x = 45,525,624,336.91
  5. Step 5: Solve for x
    x = 45,525,624,336.91/238,762.64
  6. Step 6: Final answer
    x = 190,673.15

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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.