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Finding the Fourth Proportional to 405,239.38, 607,859.08 and 155,863.06

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Solution

The fourth proportional to 405,239.38, 607,859.08 and 155,863.06 is: 233,794.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,239.38 : 607,859.08 = 155,863.06 : x
  2. Step 2: Convert to fraction form
    405,239.38/607,859.08 = 155,863.06/x
  3. Step 3: Cross multiply
    405,239.38x = 607,859.08 × 155,863.06
  4. Step 4: Simplify right side
    405,239.38x = 94,742,776,257.58
  5. Step 5: Solve for x
    x = 94,742,776,257.58/405,239.38
  6. Step 6: Final answer
    x = 233,794.59

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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.