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Finding the Fourth Proportional to 499,019.70, 748,638.90 and 246,421.20

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Solution

The fourth proportional to 499,019.70, 748,638.90 and 246,421.20 is: 369,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,019.70 : 748,638.90 = 246,421.20 : x
  2. Step 2: Convert to fraction form
    499,019.70/748,638.90 = 246,421.20/x
  3. Step 3: Cross multiply
    499,019.70x = 748,638.90 × 246,421.20
  4. Step 4: Simplify right side
    499,019.70x = 184,480,496,104.68
  5. Step 5: Solve for x
    x = 184,480,496,104.68/499,019.70
  6. Step 6: Final answer
    x = 369,685.80

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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.