Home / 385,435,292.23-531,885,380.47-218,206,242.86

Finding the Fourth Proportional to 385,435,292.23, 531,885,380.47 and 218,206,242.86

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Solution

The fourth proportional to 385,435,292.23, 531,885,380.47 and 218,206,242.86 is: 301,115,940.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,435,292.23 : 531,885,380.47 = 218,206,242.86 : x
  2. Step 2: Convert to fraction form
    385,435,292.23/531,885,380.47 = 218,206,242.86/x
  3. Step 3: Cross multiply
    385,435,292.23x = 531,885,380.47 × 218,206,242.86
  4. Step 4: Simplify right side
    385,435,292.23x = 116,060,710,503,429,296
  5. Step 5: Solve for x
    x = 116,060,710,503,429,296/385,435,292.23
  6. Step 6: Final answer
    x = 301,115,940.46

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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.