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Finding the Fourth Proportional to 324,460.20, 486,603.90 and 99,820.20

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Solution

The fourth proportional to 324,460.20, 486,603.90 and 99,820.20 is: 149,703.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,460.20 : 486,603.90 = 99,820.20 : x
  2. Step 2: Convert to fraction form
    324,460.20/486,603.90 = 99,820.20/x
  3. Step 3: Cross multiply
    324,460.20x = 486,603.90 × 99,820.20
  4. Step 4: Simplify right side
    324,460.20x = 48,572,898,618.78
  5. Step 5: Solve for x
    x = 48,572,898,618.78/324,460.20
  6. Step 6: Final answer
    x = 149,703.72

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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.