Home / 280,627.53-421,107.38-103,259.10

Finding the Fourth Proportional to 280,627.53, 421,107.38 and 103,259.10

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Solution

The fourth proportional to 280,627.53, 421,107.38 and 103,259.10 is: 154,949.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,627.53 : 421,107.38 = 103,259.10 : x
  2. Step 2: Convert to fraction form
    280,627.53/421,107.38 = 103,259.10/x
  3. Step 3: Cross multiply
    280,627.53x = 421,107.38 × 103,259.10
  4. Step 4: Simplify right side
    280,627.53x = 43,483,168,545.86
  5. Step 5: Solve for x
    x = 43,483,168,545.86/280,627.53
  6. Step 6: Final answer
    x = 154,949.76

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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.