Home / 285,109.50-393,445.02-156,047.94

Finding the Fourth Proportional to 285,109.50, 393,445.02 and 156,047.94

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Solution

The fourth proportional to 285,109.50, 393,445.02 and 156,047.94 is: 215,342.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,109.50 : 393,445.02 = 156,047.94 : x
  2. Step 2: Convert to fraction form
    285,109.50/393,445.02 = 156,047.94/x
  3. Step 3: Cross multiply
    285,109.50x = 393,445.02 × 156,047.94
  4. Step 4: Simplify right side
    285,109.50x = 61,396,284,874.26
  5. Step 5: Solve for x
    x = 61,396,284,874.26/285,109.50
  6. Step 6: Final answer
    x = 215,342.82

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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.