Home / 318,012,249.15-438,854,263.88-178,783,630.11

Finding the Fourth Proportional to 318,012,249.15, 438,854,263.88 and 178,783,630.11

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Solution

The fourth proportional to 318,012,249.15, 438,854,263.88 and 178,783,630.11 is: 246,719,925.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,012,249.15 : 438,854,263.88 = 178,783,630.11 : x
  2. Step 2: Convert to fraction form
    318,012,249.15/438,854,263.88 = 178,783,630.11/x
  3. Step 3: Cross multiply
    318,012,249.15x = 438,854,263.88 × 178,783,630.11
  4. Step 4: Simplify right side
    318,012,249.15x = 78,459,958,384,824,336
  5. Step 5: Solve for x
    x = 78,459,958,384,824,336/318,012,249.15
  6. Step 6: Final answer
    x = 246,719,925.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.