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Finding the Fourth Proportional to 203,763.60, 305,448.57 and 70,543.71

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Solution

The fourth proportional to 203,763.60, 305,448.57 and 70,543.71 is: 105,747.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,763.60 : 305,448.57 = 70,543.71 : x
  2. Step 2: Convert to fraction form
    203,763.60/305,448.57 = 70,543.71/x
  3. Step 3: Cross multiply
    203,763.60x = 305,448.57 × 70,543.71
  4. Step 4: Simplify right side
    203,763.60x = 21,547,475,341.99
  5. Step 5: Solve for x
    x = 21,547,475,341.99/203,763.60
  6. Step 6: Final answer
    x = 105,747.42

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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.