Home / 242,396,345.15-363,645,644.93-78,621,382.43

Finding the Fourth Proportional to 242,396,345.15, 363,645,644.93 and 78,621,382.43

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Solution

The fourth proportional to 242,396,345.15, 363,645,644.93 and 78,621,382.43 is: 117,948,656.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,396,345.15 : 363,645,644.93 = 78,621,382.43 : x
  2. Step 2: Convert to fraction form
    242,396,345.15/363,645,644.93 = 78,621,382.43/x
  3. Step 3: Cross multiply
    242,396,345.15x = 363,645,644.93 × 78,621,382.43
  4. Step 4: Simplify right side
    242,396,345.15x = 28,590,323,319,045,524
  5. Step 5: Solve for x
    x = 28,590,323,319,045,524/242,396,345.15
  6. Step 6: Final answer
    x = 117,948,656.78

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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.