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Finding the Fourth Proportional to 272,548, 376,122 and 153,316

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Solution

The fourth proportional to 272,548, 376,122 and 153,316 is: 211,579.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,548 : 376,122 = 153,316 : x
  2. Step 2: Convert to fraction form
    272,548/376,122 = 153,316/x
  3. Step 3: Cross multiply
    272,548x = 376,122 × 153,316
  4. Step 4: Simplify right side
    272,548x = 57,665,520,552
  5. Step 5: Solve for x
    x = 57,665,520,552/272,548
  6. Step 6: Final answer
    x = 211,579.32

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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.