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Finding the Fourth Proportional to 217,753,809.60, 326,630,714.40 and 156,531,806.40

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Solution

The fourth proportional to 217,753,809.60, 326,630,714.40 and 156,531,806.40 is: 234,797,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,753,809.60 : 326,630,714.40 = 156,531,806.40 : x
  2. Step 2: Convert to fraction form
    217,753,809.60/326,630,714.40 = 156,531,806.40/x
  3. Step 3: Cross multiply
    217,753,809.60x = 326,630,714.40 × 156,531,806.40
  4. Step 4: Simplify right side
    217,753,809.60x = 51,128,095,750,754,488
  5. Step 5: Solve for x
    x = 51,128,095,750,754,488/217,753,809.60
  6. Step 6: Final answer
    x = 234,797,709.60

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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.