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Finding the Fourth Proportional to 388,774,879.68, 583,577,305.88 and 167,555,393.72

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Solution

The fourth proportional to 388,774,879.68, 583,577,305.88 and 167,555,393.72 is: 251,511,942.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,774,879.68 : 583,577,305.88 = 167,555,393.72 : x
  2. Step 2: Convert to fraction form
    388,774,879.68/583,577,305.88 = 167,555,393.72/x
  3. Step 3: Cross multiply
    388,774,879.68x = 583,577,305.88 × 167,555,393.72
  4. Step 4: Simplify right side
    388,774,879.68x = 97,781,525,252,780,272
  5. Step 5: Solve for x
    x = 97,781,525,252,780,272/388,774,879.68
  6. Step 6: Final answer
    x = 251,511,942.68

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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.