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Finding the Fourth Proportional to 288,684,482.40, 433,026,723.60 and 135,346,039.20

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Solution

The fourth proportional to 288,684,482.40, 433,026,723.60 and 135,346,039.20 is: 203,019,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,684,482.40 : 433,026,723.60 = 135,346,039.20 : x
  2. Step 2: Convert to fraction form
    288,684,482.40/433,026,723.60 = 135,346,039.20/x
  3. Step 3: Cross multiply
    288,684,482.40x = 433,026,723.60 × 135,346,039.20
  4. Step 4: Simplify right side
    288,684,482.40x = 58,608,451,907,013,160
  5. Step 5: Solve for x
    x = 58,608,451,907,013,160/288,684,482.40
  6. Step 6: Final answer
    x = 203,019,058.80

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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.