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Finding the Fourth Proportional to 477,649.92, 716,448.96 and 145,200

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Solution

The fourth proportional to 477,649.92, 716,448.96 and 145,200 is: 217,792.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,649.92 : 716,448.96 = 145,200 : x
  2. Step 2: Convert to fraction form
    477,649.92/716,448.96 = 145,200/x
  3. Step 3: Cross multiply
    477,649.92x = 716,448.96 × 145,200
  4. Step 4: Simplify right side
    477,649.92x = 104,028,388,992
  5. Step 5: Solve for x
    x = 104,028,388,992/477,649.92
  6. Step 6: Final answer
    x = 217,792.12

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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.