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Finding the Fourth Proportional to 281,798.38, 388,881.57 and 154,476.10

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Solution

The fourth proportional to 281,798.38, 388,881.57 and 154,476.10 is: 213,176.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,798.38 : 388,881.57 = 154,476.10 : x
  2. Step 2: Convert to fraction form
    281,798.38/388,881.57 = 154,476.10/x
  3. Step 3: Cross multiply
    281,798.38x = 388,881.57 × 154,476.10
  4. Step 4: Simplify right side
    281,798.38x = 60,072,908,295.48
  5. Step 5: Solve for x
    x = 60,072,908,295.48/281,798.38
  6. Step 6: Final answer
    x = 213,176.91

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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.