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Finding the Fourth Proportional to 221,452,500.30, 332,178,750.45 and 208,697,916.30

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Solution

The fourth proportional to 221,452,500.30, 332,178,750.45 and 208,697,916.30 is: 313,046,874.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,452,500.30 : 332,178,750.45 = 208,697,916.30 : x
  2. Step 2: Convert to fraction form
    221,452,500.30/332,178,750.45 = 208,697,916.30/x
  3. Step 3: Cross multiply
    221,452,500.30x = 332,178,750.45 × 208,697,916.30
  4. Step 4: Simplify right side
    221,452,500.30x = 69,325,013,058,052,688
  5. Step 5: Solve for x
    x = 69,325,013,058,052,688/221,452,500.30
  6. Step 6: Final answer
    x = 313,046,874.45

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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.