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Finding the Fourth Proportional to 281,598.65, 388,607.51 and 154,274.30

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Solution

The fourth proportional to 281,598.65, 388,607.51 and 154,274.30 is: 212,899.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,598.65 : 388,607.51 = 154,274.30 : x
  2. Step 2: Convert to fraction form
    281,598.65/388,607.51 = 154,274.30/x
  3. Step 3: Cross multiply
    281,598.65x = 388,607.51 × 154,274.30
  4. Step 4: Simplify right side
    281,598.65x = 59,952,150,022.64
  5. Step 5: Solve for x
    x = 59,952,150,022.64/281,598.65
  6. Step 6: Final answer
    x = 212,899.28

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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.