Home / 318,958,929.60-478,438,394.40-157,715,793.60

Finding the Fourth Proportional to 318,958,929.60, 478,438,394.40 and 157,715,793.60

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Solution

The fourth proportional to 318,958,929.60, 478,438,394.40 and 157,715,793.60 is: 236,573,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,958,929.60 : 478,438,394.40 = 157,715,793.60 : x
  2. Step 2: Convert to fraction form
    318,958,929.60/478,438,394.40 = 157,715,793.60/x
  3. Step 3: Cross multiply
    318,958,929.60x = 478,438,394.40 × 157,715,793.60
  4. Step 4: Simplify right side
    318,958,929.60x = 75,457,291,061,505,792
  5. Step 5: Solve for x
    x = 75,457,291,061,505,792/318,958,929.60
  6. Step 6: Final answer
    x = 236,573,690.40

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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.