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Finding the Fourth Proportional to 240,106.80, 360,386.19 and 121,863

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Solution

The fourth proportional to 240,106.80, 360,386.19 and 121,863 is: 182,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,106.80 : 360,386.19 = 121,863 : x
  2. Step 2: Convert to fraction form
    240,106.80/360,386.19 = 121,863/x
  3. Step 3: Cross multiply
    240,106.80x = 360,386.19 × 121,863
  4. Step 4: Simplify right side
    240,106.80x = 43,917,742,271.97
  5. Step 5: Solve for x
    x = 43,917,742,271.97/240,106.80
  6. Step 6: Final answer
    x = 182,909.20

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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.