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Finding the Fourth Proportional to 640,381.57, 960,430.87 and 184,873.81

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Solution

The fourth proportional to 640,381.57, 960,430.87 and 184,873.81 is: 277,269.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,381.57 : 960,430.87 = 184,873.81 : x
  2. Step 2: Convert to fraction form
    640,381.57/960,430.87 = 184,873.81/x
  3. Step 3: Cross multiply
    640,381.57x = 960,430.87 × 184,873.81
  4. Step 4: Simplify right side
    640,381.57x = 177,558,514,178.52
  5. Step 5: Solve for x
    x = 177,558,514,178.52/640,381.57
  6. Step 6: Final answer
    x = 277,269.87

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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.