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Finding the Fourth Proportional to 290,707.86, 436,230.45 and 122,214.90

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Solution

The fourth proportional to 290,707.86, 436,230.45 and 122,214.90 is: 183,393.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,707.86 : 436,230.45 = 122,214.90 : x
  2. Step 2: Convert to fraction form
    290,707.86/436,230.45 = 122,214.90/x
  3. Step 3: Cross multiply
    290,707.86x = 436,230.45 × 122,214.90
  4. Step 4: Simplify right side
    290,707.86x = 53,313,860,823.71
  5. Step 5: Solve for x
    x = 53,313,860,823.71/290,707.86
  6. Step 6: Final answer
    x = 183,393.26

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1.5x scale

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.