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Finding the Fourth Proportional to 340,370.71, 469,695.18 and 187,405.72

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Solution

The fourth proportional to 340,370.71, 469,695.18 and 187,405.72 is: 258,610.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,370.71 : 469,695.18 = 187,405.72 : x
  2. Step 2: Convert to fraction form
    340,370.71/469,695.18 = 187,405.72/x
  3. Step 3: Cross multiply
    340,370.71x = 469,695.18 × 187,405.72
  4. Step 4: Simplify right side
    340,370.71x = 88,023,563,388.43
  5. Step 5: Solve for x
    x = 88,023,563,388.43/340,370.71
  6. Step 6: Final answer
    x = 258,610.86

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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.