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Finding the Fourth Proportional to 172,368,489.60, 258,552,734.40 and 158,259,715.20

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Solution

The fourth proportional to 172,368,489.60, 258,552,734.40 and 158,259,715.20 is: 237,389,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,368,489.60 : 258,552,734.40 = 158,259,715.20 : x
  2. Step 2: Convert to fraction form
    172,368,489.60/258,552,734.40 = 158,259,715.20/x
  3. Step 3: Cross multiply
    172,368,489.60x = 258,552,734.40 × 158,259,715.20
  4. Step 4: Simplify right side
    172,368,489.60x = 40,918,482,110,325,240
  5. Step 5: Solve for x
    x = 40,918,482,110,325,240/172,368,489.60
  6. Step 6: Final answer
    x = 237,389,572.80

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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.