Home / 398,701,330.68-550,207,945.98-220,085,327.64

Finding the Fourth Proportional to 398,701,330.68, 550,207,945.98 and 220,085,327.64

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Solution

The fourth proportional to 398,701,330.68, 550,207,945.98 and 220,085,327.64 is: 303,717,812.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,701,330.68 : 550,207,945.98 = 220,085,327.64 : x
  2. Step 2: Convert to fraction form
    398,701,330.68/550,207,945.98 = 220,085,327.64/x
  3. Step 3: Cross multiply
    398,701,330.68x = 550,207,945.98 × 220,085,327.64
  4. Step 4: Simplify right side
    398,701,330.68x = 121,092,696,061,139,712
  5. Step 5: Solve for x
    x = 121,092,696,061,139,712/398,701,330.68
  6. Step 6: Final answer
    x = 303,717,812.67

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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.