Home / 385,621.48-532,157.92-211,190.77

Finding the Fourth Proportional to 385,621.48, 532,157.92 and 211,190.77

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Solution

The fourth proportional to 385,621.48, 532,157.92 and 211,190.77 is: 291,443.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,621.48 : 532,157.92 = 211,190.77 : x
  2. Step 2: Convert to fraction form
    385,621.48/532,157.92 = 211,190.77/x
  3. Step 3: Cross multiply
    385,621.48x = 532,157.92 × 211,190.77
  4. Step 4: Simplify right side
    385,621.48x = 112,386,841,023.62
  5. Step 5: Solve for x
    x = 112,386,841,023.62/385,621.48
  6. Step 6: Final answer
    x = 291,443.41

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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.