Home / 280,050.29-420,076.95-69,688.23

Finding the Fourth Proportional to 280,050.29, 420,076.95 and 69,688.23

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Solution

The fourth proportional to 280,050.29, 420,076.95 and 69,688.23 is: 104,532.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,050.29 : 420,076.95 = 69,688.23 : x
  2. Step 2: Convert to fraction form
    280,050.29/420,076.95 = 69,688.23/x
  3. Step 3: Cross multiply
    280,050.29x = 420,076.95 × 69,688.23
  4. Step 4: Simplify right side
    280,050.29x = 29,274,419,109.30
  5. Step 5: Solve for x
    x = 29,274,419,109.30/280,050.29
  6. Step 6: Final answer
    x = 104,532.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.