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Finding the Fourth Proportional to 326,672, 490,008 and 105,056

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Solution

The fourth proportional to 326,672, 490,008 and 105,056 is: 157,584

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,672 : 490,008 = 105,056 : x
  2. Step 2: Convert to fraction form
    326,672/490,008 = 105,056/x
  3. Step 3: Cross multiply
    326,672x = 490,008 × 105,056
  4. Step 4: Simplify right side
    326,672x = 51,478,280,448
  5. Step 5: Solve for x
    x = 51,478,280,448/326,672
  6. Step 6: Final answer
    x = 157,584

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.