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Finding the Fourth Proportional to 315,457.02, 435,355.53 and 179,496.69

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Solution

The fourth proportional to 315,457.02, 435,355.53 and 179,496.69 is: 247,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,457.02 : 435,355.53 = 179,496.69 : x
  2. Step 2: Convert to fraction form
    315,457.02/435,355.53 = 179,496.69/x
  3. Step 3: Cross multiply
    315,457.02x = 435,355.53 × 179,496.69
  4. Step 4: Simplify right side
    315,457.02x = 78,144,876,608.20
  5. Step 5: Solve for x
    x = 78,144,876,608.20/315,457.02
  6. Step 6: Final answer
    x = 247,719.57

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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.