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Finding the Fourth Proportional to 281,326.42, 388,237.35 and 154,001.71

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Solution

The fourth proportional to 281,326.42, 388,237.35 and 154,001.71 is: 212,526.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,326.42 : 388,237.35 = 154,001.71 : x
  2. Step 2: Convert to fraction form
    281,326.42/388,237.35 = 154,001.71/x
  3. Step 3: Cross multiply
    281,326.42x = 388,237.35 × 154,001.71
  4. Step 4: Simplify right side
    281,326.42x = 59,789,215,785.87
  5. Step 5: Solve for x
    x = 59,789,215,785.87/281,326.42
  6. Step 6: Final answer
    x = 212,526.13

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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.