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Finding the Fourth Proportional to 228,885,686.80, 343,328,530.20 and 203,803,421.20

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Solution

The fourth proportional to 228,885,686.80, 343,328,530.20 and 203,803,421.20 is: 305,705,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,885,686.80 : 343,328,530.20 = 203,803,421.20 : x
  2. Step 2: Convert to fraction form
    228,885,686.80/343,328,530.20 = 203,803,421.20/x
  3. Step 3: Cross multiply
    228,885,686.80x = 343,328,530.20 × 203,803,421.20
  4. Step 4: Simplify right side
    228,885,686.80x = 69,971,529,050,327,512
  5. Step 5: Solve for x
    x = 69,971,529,050,327,512/228,885,686.80
  6. Step 6: Final answer
    x = 305,705,131.80

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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.