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Finding the Fourth Proportional to 320,073.36, 480,109.68 and 98,457.36

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Solution

The fourth proportional to 320,073.36, 480,109.68 and 98,457.36 is: 147,685.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,073.36 : 480,109.68 = 98,457.36 : x
  2. Step 2: Convert to fraction form
    320,073.36/480,109.68 = 98,457.36/x
  3. Step 3: Cross multiply
    320,073.36x = 480,109.68 × 98,457.36
  4. Step 4: Simplify right side
    320,073.36x = 47,270,331,603.24
  5. Step 5: Solve for x
    x = 47,270,331,603.24/320,073.36
  6. Step 6: Final answer
    x = 147,685.93

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1.5x scale

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.