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Finding the Fourth Proportional to 340,371, 469,711.98 and 189,477.72

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Solution

The fourth proportional to 340,371, 469,711.98 and 189,477.72 is: 261,479.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,371 : 469,711.98 = 189,477.72 : x
  2. Step 2: Convert to fraction form
    340,371/469,711.98 = 189,477.72/x
  3. Step 3: Cross multiply
    340,371x = 469,711.98 × 189,477.72
  4. Step 4: Simplify right side
    340,371x = 88,999,955,027.09
  5. Step 5: Solve for x
    x = 88,999,955,027.09/340,371
  6. Step 6: Final answer
    x = 261,479.25

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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.