Home / 285,257.61-393,655.53-156,204.23

Finding the Fourth Proportional to 285,257.61, 393,655.53 and 156,204.23

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Solution

The fourth proportional to 285,257.61, 393,655.53 and 156,204.23 is: 215,561.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,257.61 : 393,655.53 = 156,204.23 : x
  2. Step 2: Convert to fraction form
    285,257.61/393,655.53 = 156,204.23/x
  3. Step 3: Cross multiply
    285,257.61x = 393,655.53 × 156,204.23
  4. Step 4: Simplify right side
    285,257.61x = 61,490,656,980.61
  5. Step 5: Solve for x
    x = 61,490,656,980.61/285,257.61
  6. Step 6: Final answer
    x = 215,561.85

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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.