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Finding the Fourth Proportional to 285,363.90, 393,802.02 and 158,039.37

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Solution

The fourth proportional to 285,363.90, 393,802.02 and 158,039.37 is: 218,094.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,363.90 : 393,802.02 = 158,039.37 : x
  2. Step 2: Convert to fraction form
    285,363.90/393,802.02 = 158,039.37/x
  3. Step 3: Cross multiply
    285,363.90x = 393,802.02 × 158,039.37
  4. Step 4: Simplify right side
    285,363.90x = 62,236,223,145.53
  5. Step 5: Solve for x
    x = 62,236,223,145.53/285,363.90
  6. Step 6: Final answer
    x = 218,094.24

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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.