Home / 386,343,138.63-579,163,999.94-140,525,989.81

Finding the Fourth Proportional to 386,343,138.63, 579,163,999.94 and 140,525,989.81

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Solution

The fourth proportional to 386,343,138.63, 579,163,999.94 and 140,525,989.81 is: 210,661,420.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,343,138.63 : 579,163,999.94 = 140,525,989.81 : x
  2. Step 2: Convert to fraction form
    386,343,138.63/579,163,999.94 = 140,525,989.81/x
  3. Step 3: Cross multiply
    386,343,138.63x = 579,163,999.94 × 140,525,989.81
  4. Step 4: Simplify right side
    386,343,138.63x = 81,387,594,355,518,624
  5. Step 5: Solve for x
    x = 81,387,594,355,518,624/386,343,138.63
  6. Step 6: Final answer
    x = 210,661,420.43

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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.