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Finding the Fourth Proportional to 340,574.25, 470,007.05 and 189,671.25

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Solution

The fourth proportional to 340,574.25, 470,007.05 and 189,671.25 is: 261,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,574.25 : 470,007.05 = 189,671.25 : x
  2. Step 2: Convert to fraction form
    340,574.25/470,007.05 = 189,671.25/x
  3. Step 3: Cross multiply
    340,574.25x = 470,007.05 × 189,671.25
  4. Step 4: Simplify right side
    340,574.25x = 89,146,824,682.31
  5. Step 5: Solve for x
    x = 89,146,824,682.31/340,574.25
  6. Step 6: Final answer
    x = 261,754.45

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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.