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Finding the Fourth Proportional to 255,630,983.60, 383,446,475.40 and 83,113,425.20

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Solution

The fourth proportional to 255,630,983.60, 383,446,475.40 and 83,113,425.20 is: 124,670,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,630,983.60 : 383,446,475.40 = 83,113,425.20 : x
  2. Step 2: Convert to fraction form
    255,630,983.60/383,446,475.40 = 83,113,425.20/x
  3. Step 3: Cross multiply
    255,630,983.60x = 383,446,475.40 × 83,113,425.20
  4. Step 4: Simplify right side
    255,630,983.60x = 31,869,549,951,361,540
  5. Step 5: Solve for x
    x = 31,869,549,951,361,540/255,630,983.60
  6. Step 6: Final answer
    x = 124,670,137.80

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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.