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Finding the Fourth Proportional to 455,565.71, 628,802.27 and 261,994.56

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Solution

The fourth proportional to 455,565.71, 628,802.27 and 261,994.56 is: 361,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,565.71 : 628,802.27 = 261,994.56 : x
  2. Step 2: Convert to fraction form
    455,565.71/628,802.27 = 261,994.56/x
  3. Step 3: Cross multiply
    455,565.71x = 628,802.27 × 261,994.56
  4. Step 4: Simplify right side
    455,565.71x = 164,742,774,055.65
  5. Step 5: Solve for x
    x = 164,742,774,055.65/455,565.71
  6. Step 6: Final answer
    x = 361,622.42

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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.