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Finding the Fourth Proportional to 281,777.90, 388,869.39 and 167,124.42

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Solution

The fourth proportional to 281,777.90, 388,869.39 and 167,124.42 is: 230,641.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,777.90 : 388,869.39 = 167,124.42 : x
  2. Step 2: Convert to fraction form
    281,777.90/388,869.39 = 167,124.42/x
  3. Step 3: Cross multiply
    281,777.90x = 388,869.39 × 167,124.42
  4. Step 4: Simplify right side
    281,777.90x = 64,989,571,259.50
  5. Step 5: Solve for x
    x = 64,989,571,259.50/281,777.90
  6. Step 6: Final answer
    x = 230,641.13

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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.