Home / 219,163,430.20-328,115,999.70-212,871,974.20

Finding the Fourth Proportional to 219,163,430.20, 328,115,999.70 and 212,871,974.20

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Solution

The fourth proportional to 219,163,430.20, 328,115,999.70 and 212,871,974.20 is: 318,696,876.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,163,430.20 : 328,115,999.70 = 212,871,974.20 : x
  2. Step 2: Convert to fraction form
    219,163,430.20/328,115,999.70 = 212,871,974.20/x
  3. Step 3: Cross multiply
    219,163,430.20x = 328,115,999.70 × 212,871,974.20
  4. Step 4: Simplify right side
    219,163,430.20x = 69,846,700,622,745,600
  5. Step 5: Solve for x
    x = 69,846,700,622,745,600/219,163,430.20
  6. Step 6: Final answer
    x = 318,696,876.39

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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.