Home / 289,656,986.94-399,723,853.71-157,498,032.42

Finding the Fourth Proportional to 289,656,986.94, 399,723,853.71 and 157,498,032.42

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Solution

The fourth proportional to 289,656,986.94, 399,723,853.71 and 157,498,032.42 is: 217,345,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,656,986.94 : 399,723,853.71 = 157,498,032.42 : x
  2. Step 2: Convert to fraction form
    289,656,986.94/399,723,853.71 = 157,498,032.42/x
  3. Step 3: Cross multiply
    289,656,986.94x = 399,723,853.71 × 157,498,032.42
  4. Step 4: Simplify right side
    289,656,986.94x = 62,955,720,470,664,912
  5. Step 5: Solve for x
    x = 62,955,720,470,664,912/289,656,986.94
  6. Step 6: Final answer
    x = 217,345,768.65

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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.