Home / 280,010.41-420,014.81-69,648.35

Finding the Fourth Proportional to 280,010.41, 420,014.81 and 69,648.35

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Solution

The fourth proportional to 280,010.41, 420,014.81 and 69,648.35 is: 104,472.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,010.41 : 420,014.81 = 69,648.35 : x
  2. Step 2: Convert to fraction form
    280,010.41/420,014.81 = 69,648.35/x
  3. Step 3: Cross multiply
    280,010.41x = 420,014.81 × 69,648.35
  4. Step 4: Simplify right side
    280,010.41x = 29,253,336,566.11
  5. Step 5: Solve for x
    x = 29,253,336,566.11/280,010.41
  6. Step 6: Final answer
    x = 104,472.32

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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.