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Finding the Fourth Proportional to 210,750.57, 315,802.67 and 143,196.57

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Solution

The fourth proportional to 210,750.57, 315,802.67 and 143,196.57 is: 214,575.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,750.57 : 315,802.67 = 143,196.57 : x
  2. Step 2: Convert to fraction form
    210,750.57/315,802.67 = 143,196.57/x
  3. Step 3: Cross multiply
    210,750.57x = 315,802.67 × 143,196.57
  4. Step 4: Simplify right side
    210,750.57x = 45,221,858,424.86
  5. Step 5: Solve for x
    x = 45,221,858,424.86/210,750.57
  6. Step 6: Final answer
    x = 214,575.26

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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.