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Finding the Fourth Proportional to 228,906,009.20, 343,359,013.80 and 219,977,800.40

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Solution

The fourth proportional to 228,906,009.20, 343,359,013.80 and 219,977,800.40 is: 329,966,700.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,906,009.20 : 343,359,013.80 = 219,977,800.40 : x
  2. Step 2: Convert to fraction form
    228,906,009.20/343,359,013.80 = 219,977,800.40/x
  3. Step 3: Cross multiply
    228,906,009.20x = 343,359,013.80 × 219,977,800.40
  4. Step 4: Simplify right side
    228,906,009.20x = 75,531,360,603,237,248
  5. Step 5: Solve for x
    x = 75,531,360,603,237,248/228,906,009.20
  6. Step 6: Final answer
    x = 329,966,700.60

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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.