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Finding the Fourth Proportional to 299,128.48, 448,561.36 and 112,008.76

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Solution

The fourth proportional to 299,128.48, 448,561.36 and 112,008.76 is: 167,963.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,128.48 : 448,561.36 = 112,008.76 : x
  2. Step 2: Convert to fraction form
    299,128.48/448,561.36 = 112,008.76/x
  3. Step 3: Cross multiply
    299,128.48x = 448,561.36 × 112,008.76
  4. Step 4: Simplify right side
    299,128.48x = 50,242,801,717.51
  5. Step 5: Solve for x
    x = 50,242,801,717.51/299,128.48
  6. Step 6: Final answer
    x = 167,963.95

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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.