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Finding the Fourth Proportional to 405,802.64, 608,780.46 and 125,254.28

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Solution

The fourth proportional to 405,802.64, 608,780.46 and 125,254.28 is: 187,905.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,802.64 : 608,780.46 = 125,254.28 : x
  2. Step 2: Convert to fraction form
    405,802.64/608,780.46 = 125,254.28/x
  3. Step 3: Cross multiply
    405,802.64x = 608,780.46 × 125,254.28
  4. Step 4: Simplify right side
    405,802.64x = 76,252,358,195.37
  5. Step 5: Solve for x
    x = 76,252,358,195.37/405,802.64
  6. Step 6: Final answer
    x = 187,905.03

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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.