Home / 402,193,862.29-603,274,373.11-139,938,438.61

Finding the Fourth Proportional to 402,193,862.29, 603,274,373.11 and 139,938,438.61

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Solution

The fourth proportional to 402,193,862.29, 603,274,373.11 and 139,938,438.61 is: 209,901,944.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,193,862.29 : 603,274,373.11 = 139,938,438.61 : x
  2. Step 2: Convert to fraction form
    402,193,862.29/603,274,373.11 = 139,938,438.61/x
  3. Step 3: Cross multiply
    402,193,862.29x = 603,274,373.11 × 139,938,438.61
  4. Step 4: Simplify right side
    402,193,862.29x = 84,421,273,826,439,984
  5. Step 5: Solve for x
    x = 84,421,273,826,439,984/402,193,862.29
  6. Step 6: Final answer
    x = 209,901,944.66

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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.