Home / 285,146.18-393,438.75-170,407.61

Finding the Fourth Proportional to 285,146.18, 393,438.75 and 170,407.61

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Solution

The fourth proportional to 285,146.18, 393,438.75 and 170,407.61 is: 235,124.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,146.18 : 393,438.75 = 170,407.61 : x
  2. Step 2: Convert to fraction form
    285,146.18/393,438.75 = 170,407.61/x
  3. Step 3: Cross multiply
    285,146.18x = 393,438.75 × 170,407.61
  4. Step 4: Simplify right side
    285,146.18x = 67,044,957,068.89
  5. Step 5: Solve for x
    x = 67,044,957,068.89/285,146.18
  6. Step 6: Final answer
    x = 235,124.86

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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.