Home / 312,050,355-430,630,928.46-172,818,197.88

Finding the Fourth Proportional to 312,050,355, 430,630,928.46 and 172,818,197.88

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Solution

The fourth proportional to 312,050,355, 430,630,928.46 and 172,818,197.88 is: 238,489,909.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,050,355 : 430,630,928.46 = 172,818,197.88 : x
  2. Step 2: Convert to fraction form
    312,050,355/430,630,928.46 = 172,818,197.88/x
  3. Step 3: Cross multiply
    312,050,355x = 430,630,928.46 × 172,818,197.88
  4. Step 4: Simplify right side
    312,050,355x = 74,420,861,007,848,400
  5. Step 5: Solve for x
    x = 74,420,861,007,848,400/312,050,355
  6. Step 6: Final answer
    x = 238,489,909.77

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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.