Home / 280,376,935.20-420,565,402.80-98,600,493.60

Finding the Fourth Proportional to 280,376,935.20, 420,565,402.80 and 98,600,493.60

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Solution

The fourth proportional to 280,376,935.20, 420,565,402.80 and 98,600,493.60 is: 147,900,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,376,935.20 : 420,565,402.80 = 98,600,493.60 : x
  2. Step 2: Convert to fraction form
    280,376,935.20/420,565,402.80 = 98,600,493.60/x
  3. Step 3: Cross multiply
    280,376,935.20x = 420,565,402.80 × 98,600,493.60
  4. Step 4: Simplify right side
    280,376,935.20x = 41,467,956,307,162,824
  5. Step 5: Solve for x
    x = 41,467,956,307,162,824/280,376,935.20
  6. Step 6: Final answer
    x = 147,900,740.40

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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.