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Finding the Fourth Proportional to 391,483.40, 586,282.79 and 222,590.57

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Solution

The fourth proportional to 391,483.40, 586,282.79 and 222,590.57 is: 333,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,483.40 : 586,282.79 = 222,590.57 : x
  2. Step 2: Convert to fraction form
    391,483.40/586,282.79 = 222,590.57/x
  3. Step 3: Cross multiply
    391,483.40x = 586,282.79 × 222,590.57
  4. Step 4: Simplify right side
    391,483.40x = 130,501,018,032.35
  5. Step 5: Solve for x
    x = 130,501,018,032.35/391,483.40
  6. Step 6: Final answer
    x = 333,350.07

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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.