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Finding the Fourth Proportional to 217,656.25, 300,379.08 and 144,934.45

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Solution

The fourth proportional to 217,656.25, 300,379.08 and 144,934.45 is: 200,018.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,656.25 : 300,379.08 = 144,934.45 : x
  2. Step 2: Convert to fraction form
    217,656.25/300,379.08 = 144,934.45/x
  3. Step 3: Cross multiply
    217,656.25x = 300,379.08 × 144,934.45
  4. Step 4: Simplify right side
    217,656.25x = 43,535,276,543.86
  5. Step 5: Solve for x
    x = 43,535,276,543.86/217,656.25
  6. Step 6: Final answer
    x = 200,018.50

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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.