Home / 420,802.40-580,707.96-239,514.33

Finding the Fourth Proportional to 420,802.40, 580,707.96 and 239,514.33

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Solution

The fourth proportional to 420,802.40, 580,707.96 and 239,514.33 is: 330,530.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,802.40 : 580,707.96 = 239,514.33 : x
  2. Step 2: Convert to fraction form
    420,802.40/580,707.96 = 239,514.33/x
  3. Step 3: Cross multiply
    420,802.40x = 580,707.96 × 239,514.33
  4. Step 4: Simplify right side
    420,802.40x = 139,087,877,965.07
  5. Step 5: Solve for x
    x = 139,087,877,965.07/420,802.40
  6. Step 6: Final answer
    x = 330,530.14

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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.