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Finding the Fourth Proportional to 290,915.55, 401,455.32 and 176,262.07

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Solution

The fourth proportional to 290,915.55, 401,455.32 and 176,262.07 is: 243,236.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,915.55 : 401,455.32 = 176,262.07 : x
  2. Step 2: Convert to fraction form
    290,915.55/401,455.32 = 176,262.07/x
  3. Step 3: Cross multiply
    290,915.55x = 401,455.32 × 176,262.07
  4. Step 4: Simplify right side
    290,915.55x = 70,761,345,715.71
  5. Step 5: Solve for x
    x = 70,761,345,715.71/290,915.55
  6. Step 6: Final answer
    x = 243,236.73

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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.