Home / 285,211.19-393,596.11-156,147.51

Finding the Fourth Proportional to 285,211.19, 393,596.11 and 156,147.51

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Solution

The fourth proportional to 285,211.19, 393,596.11 and 156,147.51 is: 215,486.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,211.19 : 393,596.11 = 156,147.51 : x
  2. Step 2: Convert to fraction form
    285,211.19/393,596.11 = 156,147.51/x
  3. Step 3: Cross multiply
    285,211.19x = 393,596.11 × 156,147.51
  4. Step 4: Simplify right side
    285,211.19x = 61,459,054,193.36
  5. Step 5: Solve for x
    x = 61,459,054,193.36/285,211.19
  6. Step 6: Final answer
    x = 215,486.12

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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.