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Finding the Fourth Proportional to 281,785.50, 388,903.77 and 174,390.12

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Solution

The fourth proportional to 281,785.50, 388,903.77 and 174,390.12 is: 240,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,785.50 : 388,903.77 = 174,390.12 : x
  2. Step 2: Convert to fraction form
    281,785.50/388,903.77 = 174,390.12/x
  3. Step 3: Cross multiply
    281,785.50x = 388,903.77 × 174,390.12
  4. Step 4: Simplify right side
    281,785.50x = 67,820,975,118.75
  5. Step 5: Solve for x
    x = 67,820,975,118.75/281,785.50
  6. Step 6: Final answer
    x = 240,682.98

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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.