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Finding the Fourth Proportional to 329,891.40, 455,252.40 and 178,988.40

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Solution

The fourth proportional to 329,891.40, 455,252.40 and 178,988.40 is: 247,005.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,891.40 : 455,252.40 = 178,988.40 : x
  2. Step 2: Convert to fraction form
    329,891.40/455,252.40 = 178,988.40/x
  3. Step 3: Cross multiply
    329,891.40x = 455,252.40 × 178,988.40
  4. Step 4: Simplify right side
    329,891.40x = 81,484,898,672.16
  5. Step 5: Solve for x
    x = 81,484,898,672.16/329,891.40
  6. Step 6: Final answer
    x = 247,005.22

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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.