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Finding the Fourth Proportional to 202,691,980.80, 279,947,355.12 and 133,386,737.76

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Solution

The fourth proportional to 202,691,980.80, 279,947,355.12 and 133,386,737.76 is: 184,226,649.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,691,980.80 : 279,947,355.12 = 133,386,737.76 : x
  2. Step 2: Convert to fraction form
    202,691,980.80/279,947,355.12 = 133,386,737.76/x
  3. Step 3: Cross multiply
    202,691,980.80x = 279,947,355.12 × 133,386,737.76
  4. Step 4: Simplify right side
    202,691,980.80x = 37,341,264,443,997,032
  5. Step 5: Solve for x
    x = 37,341,264,443,997,032/202,691,980.80
  6. Step 6: Final answer
    x = 184,226,649.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.