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Finding the Fourth Proportional to 340,888.92, 470,442.78 and 189,987

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Solution

The fourth proportional to 340,888.92, 470,442.78 and 189,987 is: 262,191.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,888.92 : 470,442.78 = 189,987 : x
  2. Step 2: Convert to fraction form
    340,888.92/470,442.78 = 189,987/x
  3. Step 3: Cross multiply
    340,888.92x = 470,442.78 × 189,987
  4. Step 4: Simplify right side
    340,888.92x = 89,378,012,443.86
  5. Step 5: Solve for x
    x = 89,378,012,443.86/340,888.92
  6. Step 6: Final answer
    x = 262,191.02

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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.