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Finding the Fourth Proportional to 340,840.56, 470,369.58 and 189,947.28

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Solution

The fourth proportional to 340,840.56, 470,369.58 and 189,947.28 is: 262,132.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,840.56 : 470,369.58 = 189,947.28 : x
  2. Step 2: Convert to fraction form
    340,840.56/470,369.58 = 189,947.28/x
  3. Step 3: Cross multiply
    340,840.56x = 470,369.58 × 189,947.28
  4. Step 4: Simplify right side
    340,840.56x = 89,345,422,315.74
  5. Step 5: Solve for x
    x = 89,345,422,315.74/340,840.56
  6. Step 6: Final answer
    x = 262,132.60

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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.