Home / 309,727,778.52-427,429,770.12-168,603,056.40

Finding the Fourth Proportional to 309,727,778.52, 427,429,770.12 and 168,603,056.40

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Solution

The fourth proportional to 309,727,778.52, 427,429,770.12 and 168,603,056.40 is: 232,675,176.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,727,778.52 : 427,429,770.12 = 168,603,056.40 : x
  2. Step 2: Convert to fraction form
    309,727,778.52/427,429,770.12 = 168,603,056.40/x
  3. Step 3: Cross multiply
    309,727,778.52x = 427,429,770.12 × 168,603,056.40
  4. Step 4: Simplify right side
    309,727,778.52x = 72,065,965,638,581,392
  5. Step 5: Solve for x
    x = 72,065,965,638,581,392/309,727,778.52
  6. Step 6: Final answer
    x = 232,675,176.84

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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.