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Finding the Fourth Proportional to 400,915.33, 553,276.93 and 219,627.21

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Solution

The fourth proportional to 400,915.33, 553,276.93 and 219,627.21 is: 303,093.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,915.33 : 553,276.93 = 219,627.21 : x
  2. Step 2: Convert to fraction form
    400,915.33/553,276.93 = 219,627.21/x
  3. Step 3: Cross multiply
    400,915.33x = 553,276.93 × 219,627.21
  4. Step 4: Simplify right side
    400,915.33x = 121,514,670,430.79
  5. Step 5: Solve for x
    x = 121,514,670,430.79/400,915.33
  6. Step 6: Final answer
    x = 303,093.10

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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.