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Finding the Fourth Proportional to 220,343.66, 303,962.32 and 143,907.49

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Solution

The fourth proportional to 220,343.66, 303,962.32 and 143,907.49 is: 198,519.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,343.66 : 303,962.32 = 143,907.49 : x
  2. Step 2: Convert to fraction form
    220,343.66/303,962.32 = 143,907.49/x
  3. Step 3: Cross multiply
    220,343.66x = 303,962.32 × 143,907.49
  4. Step 4: Simplify right side
    220,343.66x = 43,742,455,085.61
  5. Step 5: Solve for x
    x = 43,742,455,085.61/220,343.66
  6. Step 6: Final answer
    x = 198,519.24

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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.