Home / 285,040.20-393,339.02-157,708.20

Finding the Fourth Proportional to 285,040.20, 393,339.02 and 157,708.20

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Solution

The fourth proportional to 285,040.20, 393,339.02 and 157,708.20 is: 217,628.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,040.20 : 393,339.02 = 157,708.20 : x
  2. Step 2: Convert to fraction form
    285,040.20/393,339.02 = 157,708.20/x
  3. Step 3: Cross multiply
    285,040.20x = 393,339.02 × 157,708.20
  4. Step 4: Simplify right side
    285,040.20x = 62,032,788,833.96
  5. Step 5: Solve for x
    x = 62,032,788,833.96/285,040.20
  6. Step 6: Final answer
    x = 217,628.21

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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.