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Finding the Fourth Proportional to 272,642.61, 376,239.46 and 151,783.91

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Solution

The fourth proportional to 272,642.61, 376,239.46 and 151,783.91 is: 209,457.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,642.61 : 376,239.46 = 151,783.91 : x
  2. Step 2: Convert to fraction form
    272,642.61/376,239.46 = 151,783.91/x
  3. Step 3: Cross multiply
    272,642.61x = 376,239.46 × 151,783.91
  4. Step 4: Simplify right side
    272,642.61x = 57,107,094,453.89
  5. Step 5: Solve for x
    x = 57,107,094,453.89/272,642.61
  6. Step 6: Final answer
    x = 209,457.71

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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.