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Finding the Fourth Proportional to 215,937.86, 297,980.69 and 119,142.86

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Solution

The fourth proportional to 215,937.86, 297,980.69 and 119,142.86 is: 164,409.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,937.86 : 297,980.69 = 119,142.86 : x
  2. Step 2: Convert to fraction form
    215,937.86/297,980.69 = 119,142.86/x
  3. Step 3: Cross multiply
    215,937.86x = 297,980.69 × 119,142.86
  4. Step 4: Simplify right side
    215,937.86x = 35,502,269,545.76
  5. Step 5: Solve for x
    x = 35,502,269,545.76/215,937.86
  6. Step 6: Final answer
    x = 164,409.66

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1.5x scale

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.