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Finding the Fourth Proportional to 281,282.04, 388,169.69 and 153,965.70

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Solution

The fourth proportional to 281,282.04, 388,169.69 and 153,965.70 is: 212,472.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,282.04 : 388,169.69 = 153,965.70 : x
  2. Step 2: Convert to fraction form
    281,282.04/388,169.69 = 153,965.70/x
  3. Step 3: Cross multiply
    281,282.04x = 388,169.69 × 153,965.70
  4. Step 4: Simplify right side
    281,282.04x = 59,764,817,269.80
  5. Step 5: Solve for x
    x = 59,764,817,269.80/281,282.04
  6. Step 6: Final answer
    x = 212,472.92

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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.