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Finding the Fourth Proportional to 272,353.64, 375,848 and 153,121.64

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Solution

The fourth proportional to 272,353.64, 375,848 and 153,121.64 is: 211,307.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,353.64 : 375,848 = 153,121.64 : x
  2. Step 2: Convert to fraction form
    272,353.64/375,848 = 153,121.64/x
  3. Step 3: Cross multiply
    272,353.64x = 375,848 × 153,121.64
  4. Step 4: Simplify right side
    272,353.64x = 57,550,462,150.72
  5. Step 5: Solve for x
    x = 57,550,462,150.72/272,353.64
  6. Step 6: Final answer
    x = 211,307.85

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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.