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Finding the Fourth Proportional to 253,533.72, 349,817.40 and 173,128.68

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Solution

The fourth proportional to 253,533.72, 349,817.40 and 173,128.68 is: 238,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,533.72 : 349,817.40 = 173,128.68 : x
  2. Step 2: Convert to fraction form
    253,533.72/349,817.40 = 173,128.68/x
  3. Step 3: Cross multiply
    253,533.72x = 349,817.40 × 173,128.68
  4. Step 4: Simplify right side
    253,533.72x = 60,563,424,703.03
  5. Step 5: Solve for x
    x = 60,563,424,703.03/253,533.72
  6. Step 6: Final answer
    x = 238,877.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.