Home / 870,075.96-1,305,111.42-238,990.38

Finding the Fourth Proportional to 870,075.96, 1,305,111.42 and 238,990.38

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Solution

The fourth proportional to 870,075.96, 1,305,111.42 and 238,990.38 is: 358,484.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,075.96 : 1,305,111.42 = 238,990.38 : x
  2. Step 2: Convert to fraction form
    870,075.96/1,305,111.42 = 238,990.38/x
  3. Step 3: Cross multiply
    870,075.96x = 1,305,111.42 × 238,990.38
  4. Step 4: Simplify right side
    870,075.96x = 311,909,074,208.14
  5. Step 5: Solve for x
    x = 311,909,074,208.14/870,075.96
  6. Step 6: Final answer
    x = 358,484.88

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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.