Home / 397,402,120.66-548,404,903.07-218,784,225.79

Finding the Fourth Proportional to 397,402,120.66, 548,404,903.07 and 218,784,225.79

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Solution

The fourth proportional to 397,402,120.66, 548,404,903.07 and 218,784,225.79 is: 301,916,713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,402,120.66 : 548,404,903.07 = 218,784,225.79 : x
  2. Step 2: Convert to fraction form
    397,402,120.66/548,404,903.07 = 218,784,225.79/x
  3. Step 3: Cross multiply
    397,402,120.66x = 548,404,903.07 × 218,784,225.79
  4. Step 4: Simplify right side
    397,402,120.66x = 119,982,342,137,609,952
  5. Step 5: Solve for x
    x = 119,982,342,137,609,952/397,402,120.66
  6. Step 6: Final answer
    x = 301,916,713.32

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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.