Home / 260,554,190.43-390,843,855.09-85,673,352.35

Finding the Fourth Proportional to 260,554,190.43, 390,843,855.09 and 85,673,352.35

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Solution

The fourth proportional to 260,554,190.43, 390,843,855.09 and 85,673,352.35 is: 128,514,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,554,190.43 : 390,843,855.09 = 85,673,352.35 : x
  2. Step 2: Convert to fraction form
    260,554,190.43/390,843,855.09 = 85,673,352.35/x
  3. Step 3: Cross multiply
    260,554,190.43x = 390,843,855.09 × 85,673,352.35
  4. Step 4: Simplify right side
    260,554,190.43x = 33,484,903,309,003,688
  5. Step 5: Solve for x
    x = 33,484,903,309,003,688/260,554,190.43
  6. Step 6: Final answer
    x = 128,514,161.50

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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.