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Finding the Fourth Proportional to 400,875.88, 553,580.58 and 300,098.92

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Solution

The fourth proportional to 400,875.88, 553,580.58 and 300,098.92 is: 414,414.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,875.88 : 553,580.58 = 300,098.92 : x
  2. Step 2: Convert to fraction form
    400,875.88/553,580.58 = 300,098.92/x
  3. Step 3: Cross multiply
    400,875.88x = 553,580.58 × 300,098.92
  4. Step 4: Simplify right side
    400,875.88x = 166,128,934,190.97
  5. Step 5: Solve for x
    x = 166,128,934,190.97/400,875.88
  6. Step 6: Final answer
    x = 414,414.89

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1.5x scale

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.