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Finding the Fourth Proportional to 272,376, 375,878.88 and 153,144

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Solution

The fourth proportional to 272,376, 375,878.88 and 153,144 is: 211,338.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,376 : 375,878.88 = 153,144 : x
  2. Step 2: Convert to fraction form
    272,376/375,878.88 = 153,144/x
  3. Step 3: Cross multiply
    272,376x = 375,878.88 × 153,144
  4. Step 4: Simplify right side
    272,376x = 57,563,595,198.72
  5. Step 5: Solve for x
    x = 57,563,595,198.72/272,376
  6. Step 6: Final answer
    x = 211,338.72

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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.