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Finding the Fourth Proportional to 347,533.51, 521,405.51 and 145,227.81

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Solution

The fourth proportional to 347,533.51, 521,405.51 and 145,227.81 is: 217,885.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,533.51 : 521,405.51 = 145,227.81 : x
  2. Step 2: Convert to fraction form
    347,533.51/521,405.51 = 145,227.81/x
  3. Step 3: Cross multiply
    347,533.51x = 521,405.51 × 145,227.81
  4. Step 4: Simplify right side
    347,533.51x = 75,722,579,860.82
  5. Step 5: Solve for x
    x = 75,722,579,860.82/347,533.51
  6. Step 6: Final answer
    x = 217,885.69

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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.