Home / 280,546,982.86-387,166,792.92-156,787,656.34

Finding the Fourth Proportional to 280,546,982.86, 387,166,792.92 and 156,787,656.34

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Solution

The fourth proportional to 280,546,982.86, 387,166,792.92 and 156,787,656.34 is: 216,373,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,546,982.86 : 387,166,792.92 = 156,787,656.34 : x
  2. Step 2: Convert to fraction form
    280,546,982.86/387,166,792.92 = 156,787,656.34/x
  3. Step 3: Cross multiply
    280,546,982.86x = 387,166,792.92 × 156,787,656.34
  4. Step 4: Simplify right side
    280,546,982.86x = 60,702,974,074,600,912
  5. Step 5: Solve for x
    x = 60,702,974,074,600,912/280,546,982.86
  6. Step 6: Final answer
    x = 216,373,647.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.