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Finding the Fourth Proportional to 290,851.70, 436,277.55 and 238,363.70

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Solution

The fourth proportional to 290,851.70, 436,277.55 and 238,363.70 is: 357,545.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,851.70 : 436,277.55 = 238,363.70 : x
  2. Step 2: Convert to fraction form
    290,851.70/436,277.55 = 238,363.70/x
  3. Step 3: Cross multiply
    290,851.70x = 436,277.55 × 238,363.70
  4. Step 4: Simplify right side
    290,851.70x = 103,992,731,044.94
  5. Step 5: Solve for x
    x = 103,992,731,044.94/290,851.70
  6. Step 6: Final answer
    x = 357,545.55

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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.