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Finding the Fourth Proportional to 281,275.78, 388,145.60 and 153,926.76

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Solution

The fourth proportional to 281,275.78, 388,145.60 and 153,926.76 is: 212,410.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,275.78 : 388,145.60 = 153,926.76 : x
  2. Step 2: Convert to fraction form
    281,275.78/388,145.60 = 153,926.76/x
  3. Step 3: Cross multiply
    281,275.78x = 388,145.60 × 153,926.76
  4. Step 4: Simplify right side
    281,275.78x = 59,745,994,616.26
  5. Step 5: Solve for x
    x = 59,745,994,616.26/281,275.78
  6. Step 6: Final answer
    x = 212,410.73

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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.