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Finding the Fourth Proportional to 359,386.81, 538,622.22 and 190,987.81

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Solution

The fourth proportional to 359,386.81, 538,622.22 and 190,987.81 is: 286,238.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,386.81 : 538,622.22 = 190,987.81 : x
  2. Step 2: Convert to fraction form
    359,386.81/538,622.22 = 190,987.81/x
  3. Step 3: Cross multiply
    359,386.81x = 538,622.22 × 190,987.81
  4. Step 4: Simplify right side
    359,386.81x = 102,870,278,215.14
  5. Step 5: Solve for x
    x = 102,870,278,215.14/359,386.81
  6. Step 6: Final answer
    x = 286,238.32

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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.