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Finding the Fourth Proportional to 387,249,659.60, 580,860,492.60 and 157,212,251.60

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Solution

The fourth proportional to 387,249,659.60, 580,860,492.60 and 157,212,251.60 is: 235,812,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,249,659.60 : 580,860,492.60 = 157,212,251.60 : x
  2. Step 2: Convert to fraction form
    387,249,659.60/580,860,492.60 = 157,212,251.60/x
  3. Step 3: Cross multiply
    387,249,659.60x = 580,860,492.60 × 157,212,251.60
  4. Step 4: Simplify right side
    387,249,659.60x = 91,318,385,907,131,136
  5. Step 5: Solve for x
    x = 91,318,385,907,131,136/387,249,659.60
  6. Step 6: Final answer
    x = 235,812,695.10

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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.