Home / 320,415.16-442,168.32-177,172.08

Finding the Fourth Proportional to 320,415.16, 442,168.32 and 177,172.08

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Solution

The fourth proportional to 320,415.16, 442,168.32 and 177,172.08 is: 244,494.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,415.16 : 442,168.32 = 177,172.08 : x
  2. Step 2: Convert to fraction form
    320,415.16/442,168.32 = 177,172.08/x
  3. Step 3: Cross multiply
    320,415.16x = 442,168.32 × 177,172.08
  4. Step 4: Simplify right side
    320,415.16x = 78,339,880,964.51
  5. Step 5: Solve for x
    x = 78,339,880,964.51/320,415.16
  6. Step 6: Final answer
    x = 244,494.93

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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.