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Finding the Fourth Proportional to 265,555.56, 398,451.06 and 139,165.76

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Solution

The fourth proportional to 265,555.56, 398,451.06 and 139,165.76 is: 208,810.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,555.56 : 398,451.06 = 139,165.76 : x
  2. Step 2: Convert to fraction form
    265,555.56/398,451.06 = 139,165.76/x
  3. Step 3: Cross multiply
    265,555.56x = 398,451.06 × 139,165.76
  4. Step 4: Simplify right side
    265,555.56x = 55,450,744,587.71
  5. Step 5: Solve for x
    x = 55,450,744,587.71/265,555.56
  6. Step 6: Final answer
    x = 208,810.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.