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Finding the Fourth Proportional to 503,457.87, 755,211.68 and 143,681.74

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Solution

The fourth proportional to 503,457.87, 755,211.68 and 143,681.74 is: 215,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,457.87 : 755,211.68 = 143,681.74 : x
  2. Step 2: Convert to fraction form
    503,457.87/755,211.68 = 143,681.74/x
  3. Step 3: Cross multiply
    503,457.87x = 755,211.68 × 143,681.74
  4. Step 4: Simplify right side
    503,457.87x = 108,510,128,250.72
  5. Step 5: Solve for x
    x = 108,510,128,250.72/503,457.87
  6. Step 6: Final answer
    x = 215,529.71

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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.