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Finding the Fourth Proportional to 281,816.88, 388,947.33 and 174,421.50

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Solution

The fourth proportional to 281,816.88, 388,947.33 and 174,421.50 is: 240,726.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,816.88 : 388,947.33 = 174,421.50 : x
  2. Step 2: Convert to fraction form
    281,816.88/388,947.33 = 174,421.50/x
  3. Step 3: Cross multiply
    281,816.88x = 388,947.33 × 174,421.50
  4. Step 4: Simplify right side
    281,816.88x = 67,840,776,719.60
  5. Step 5: Solve for x
    x = 67,840,776,719.60/281,816.88
  6. Step 6: Final answer
    x = 240,726.45

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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.