Home / 280,434,719-386,992,782.60-156,676,325.60

Finding the Fourth Proportional to 280,434,719, 386,992,782.60 and 156,676,325.60

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Solution

The fourth proportional to 280,434,719, 386,992,782.60 and 156,676,325.60 is: 216,209,346.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,434,719 : 386,992,782.60 = 156,676,325.60 : x
  2. Step 2: Convert to fraction form
    280,434,719/386,992,782.60 = 156,676,325.60/x
  3. Step 3: Cross multiply
    280,434,719x = 386,992,782.60 × 156,676,325.60
  4. Step 4: Simplify right side
    280,434,719x = 60,632,607,211,487,616
  5. Step 5: Solve for x
    x = 60,632,607,211,487,616/280,434,719
  6. Step 6: Final answer
    x = 216,209,346.07

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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.