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Finding the Fourth Proportional to 520,272.30, 780,408.45 and 146,246.70

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Solution

The fourth proportional to 520,272.30, 780,408.45 and 146,246.70 is: 219,370.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,272.30 : 780,408.45 = 146,246.70 : x
  2. Step 2: Convert to fraction form
    520,272.30/780,408.45 = 146,246.70/x
  3. Step 3: Cross multiply
    520,272.30x = 780,408.45 × 146,246.70
  4. Step 4: Simplify right side
    520,272.30x = 114,132,160,464.62
  5. Step 5: Solve for x
    x = 114,132,160,464.62/520,272.30
  6. Step 6: Final answer
    x = 219,370.05

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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.