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Finding the Fourth Proportional to 356,515.56, 534,840.77 and 143,300.08

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Solution

The fourth proportional to 356,515.56, 534,840.77 and 143,300.08 is: 214,977.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,515.56 : 534,840.77 = 143,300.08 : x
  2. Step 2: Convert to fraction form
    356,515.56/534,840.77 = 143,300.08/x
  3. Step 3: Cross multiply
    356,515.56x = 534,840.77 × 143,300.08
  4. Step 4: Simplify right side
    356,515.56x = 76,642,725,128.26
  5. Step 5: Solve for x
    x = 76,642,725,128.26/356,515.56
  6. Step 6: Final answer
    x = 214,977.22

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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.