Home / 279,289.54-385,421.25-151,965.91

Finding the Fourth Proportional to 279,289.54, 385,421.25 and 151,965.91

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Solution

The fourth proportional to 279,289.54, 385,421.25 and 151,965.91 is: 209,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,289.54 : 385,421.25 = 151,965.91 : x
  2. Step 2: Convert to fraction form
    279,289.54/385,421.25 = 151,965.91/x
  3. Step 3: Cross multiply
    279,289.54x = 385,421.25 × 151,965.91
  4. Step 4: Simplify right side
    279,289.54x = 58,570,890,989.59
  5. Step 5: Solve for x
    x = 58,570,890,989.59/279,289.54
  6. Step 6: Final answer
    x = 209,713.87

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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.