Home / 285,839.40-394,482.60-158,556

Finding the Fourth Proportional to 285,839.40, 394,482.60 and 158,556

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Solution

The fourth proportional to 285,839.40, 394,482.60 and 158,556 is: 218,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,839.40 : 394,482.60 = 158,556 : x
  2. Step 2: Convert to fraction form
    285,839.40/394,482.60 = 158,556/x
  3. Step 3: Cross multiply
    285,839.40x = 394,482.60 × 158,556
  4. Step 4: Simplify right side
    285,839.40x = 62,547,583,125.60
  5. Step 5: Solve for x
    x = 62,547,583,125.60/285,839.40
  6. Step 6: Final answer
    x = 218,820.72

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1.5x scale

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.