Home / 285,345.09-393,788.07-158,020.74

Finding the Fourth Proportional to 285,345.09, 393,788.07 and 158,020.74

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Solution

The fourth proportional to 285,345.09, 393,788.07 and 158,020.74 is: 218,075.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,345.09 : 393,788.07 = 158,020.74 : x
  2. Step 2: Convert to fraction form
    285,345.09/393,788.07 = 158,020.74/x
  3. Step 3: Cross multiply
    285,345.09x = 393,788.07 × 158,020.74
  4. Step 4: Simplify right side
    285,345.09x = 62,226,682,224.57
  5. Step 5: Solve for x
    x = 62,226,682,224.57/285,345.09
  6. Step 6: Final answer
    x = 218,075.18

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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.