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Finding the Fourth Proportional to 280,310.64, 420,529.32 and 93,329.52

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Solution

The fourth proportional to 280,310.64, 420,529.32 and 93,329.52 is: 140,015.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,310.64 : 420,529.32 = 93,329.52 : x
  2. Step 2: Convert to fraction form
    280,310.64/420,529.32 = 93,329.52/x
  3. Step 3: Cross multiply
    280,310.64x = 420,529.32 × 93,329.52
  4. Step 4: Simplify right side
    280,310.64x = 39,247,799,581.53
  5. Step 5: Solve for x
    x = 39,247,799,581.53/280,310.64
  6. Step 6: Final answer
    x = 140,015.38

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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.