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Finding the Fourth Proportional to 280,483.66, 420,878.56 and 162,385.66

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Solution

The fourth proportional to 280,483.66, 420,878.56 and 162,385.66 is: 243,667.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,483.66 : 420,878.56 = 162,385.66 : x
  2. Step 2: Convert to fraction form
    280,483.66/420,878.56 = 162,385.66/x
  3. Step 3: Cross multiply
    280,483.66x = 420,878.56 × 162,385.66
  4. Step 4: Simplify right side
    280,483.66x = 68,344,642,745.45
  5. Step 5: Solve for x
    x = 68,344,642,745.45/280,483.66
  6. Step 6: Final answer
    x = 243,667.11

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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.