Home / 285,072.16-393,403.08-157,759.60

Finding the Fourth Proportional to 285,072.16, 393,403.08 and 157,759.60

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Solution

The fourth proportional to 285,072.16, 393,403.08 and 157,759.60 is: 217,710.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,072.16 : 393,403.08 = 157,759.60 : x
  2. Step 2: Convert to fraction form
    285,072.16/393,403.08 = 157,759.60/x
  3. Step 3: Cross multiply
    285,072.16x = 393,403.08 × 157,759.60
  4. Step 4: Simplify right side
    285,072.16x = 62,063,112,539.57
  5. Step 5: Solve for x
    x = 62,063,112,539.57/285,072.16
  6. Step 6: Final answer
    x = 217,710.18

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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.