Home / 285,081,828.72-393,412,924.44-154,701,636.72

Finding the Fourth Proportional to 285,081,828.72, 393,412,924.44 and 154,701,636.72

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Solution

The fourth proportional to 285,081,828.72, 393,412,924.44 and 154,701,636.72 is: 213,488,259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,081,828.72 : 393,412,924.44 = 154,701,636.72 : x
  2. Step 2: Convert to fraction form
    285,081,828.72/393,412,924.44 = 154,701,636.72/x
  3. Step 3: Cross multiply
    285,081,828.72x = 393,412,924.44 × 154,701,636.72
  4. Step 4: Simplify right side
    285,081,828.72x = 60,861,623,317,669,688
  5. Step 5: Solve for x
    x = 60,861,623,317,669,688/285,081,828.72
  6. Step 6: Final answer
    x = 213,488,259.11

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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.