Home / 217,218,521.40-325,827,782.10-148,343,767.80

Finding the Fourth Proportional to 217,218,521.40, 325,827,782.10 and 148,343,767.80

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Solution

The fourth proportional to 217,218,521.40, 325,827,782.10 and 148,343,767.80 is: 222,515,651.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,218,521.40 : 325,827,782.10 = 148,343,767.80 : x
  2. Step 2: Convert to fraction form
    217,218,521.40/325,827,782.10 = 148,343,767.80/x
  3. Step 3: Cross multiply
    217,218,521.40x = 325,827,782.10 × 148,343,767.80
  4. Step 4: Simplify right side
    217,218,521.40x = 48,334,520,850,631,400
  5. Step 5: Solve for x
    x = 48,334,520,850,631,400/217,218,521.40
  6. Step 6: Final answer
    x = 222,515,651.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.