Home / 385,902,095.85-532,548,255.78-209,690,090.61

Finding the Fourth Proportional to 385,902,095.85, 532,548,255.78 and 209,690,090.61

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Solution

The fourth proportional to 385,902,095.85, 532,548,255.78 and 209,690,090.61 is: 289,374,152.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,902,095.85 : 532,548,255.78 = 209,690,090.61 : x
  2. Step 2: Convert to fraction form
    385,902,095.85/532,548,255.78 = 209,690,090.61/x
  3. Step 3: Cross multiply
    385,902,095.85x = 532,548,255.78 × 209,690,090.61
  4. Step 4: Simplify right side
    385,902,095.85x = 111,670,092,008,705,664
  5. Step 5: Solve for x
    x = 111,670,092,008,705,664/385,902,095.85
  6. Step 6: Final answer
    x = 289,374,152.69

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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.