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Finding the Fourth Proportional to 316,939,511.80, 475,409,267.70 and 218,304,062.20

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Solution

The fourth proportional to 316,939,511.80, 475,409,267.70 and 218,304,062.20 is: 327,456,093.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,939,511.80 : 475,409,267.70 = 218,304,062.20 : x
  2. Step 2: Convert to fraction form
    316,939,511.80/475,409,267.70 = 218,304,062.20/x
  3. Step 3: Cross multiply
    316,939,511.80x = 475,409,267.70 × 218,304,062.20
  4. Step 4: Simplify right side
    316,939,511.80x = 103,783,774,346,437,248
  5. Step 5: Solve for x
    x = 103,783,774,346,437,248/316,939,511.80
  6. Step 6: Final answer
    x = 327,456,093.30

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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.