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Finding the Fourth Proportional to 281,282.79, 388,170.72 and 153,966.45

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Solution

The fourth proportional to 281,282.79, 388,170.72 and 153,966.45 is: 212,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,282.79 : 388,170.72 = 153,966.45 : x
  2. Step 2: Convert to fraction form
    281,282.79/388,170.72 = 153,966.45/x
  3. Step 3: Cross multiply
    281,282.79x = 388,170.72 × 153,966.45
  4. Step 4: Simplify right side
    281,282.79x = 59,765,267,752.34
  5. Step 5: Solve for x
    x = 59,765,267,752.34/281,282.79
  6. Step 6: Final answer
    x = 212,473.96

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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.