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Finding the Fourth Proportional to 280,539.96, 420,813.30 and 93,551.40

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Solution

The fourth proportional to 280,539.96, 420,813.30 and 93,551.40 is: 140,328.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,539.96 : 420,813.30 = 93,551.40 : x
  2. Step 2: Convert to fraction form
    280,539.96/420,813.30 = 93,551.40/x
  3. Step 3: Cross multiply
    280,539.96x = 420,813.30 × 93,551.40
  4. Step 4: Simplify right side
    280,539.96x = 39,367,673,353.62
  5. Step 5: Solve for x
    x = 39,367,673,353.62/280,539.96
  6. Step 6: Final answer
    x = 140,328.22

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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.