Home / 218,918.56-302,136.06-123,455.20

Finding the Fourth Proportional to 218,918.56, 302,136.06 and 123,455.20

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Solution

The fourth proportional to 218,918.56, 302,136.06 and 123,455.20 is: 170,384.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,918.56 : 302,136.06 = 123,455.20 : x
  2. Step 2: Convert to fraction form
    218,918.56/302,136.06 = 123,455.20/x
  3. Step 3: Cross multiply
    218,918.56x = 302,136.06 × 123,455.20
  4. Step 4: Simplify right side
    218,918.56x = 37,300,267,714.51
  5. Step 5: Solve for x
    x = 37,300,267,714.51/218,918.56
  6. Step 6: Final answer
    x = 170,384.22

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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.