Home / 323,611,054.72-485,762,018.38-139,469,405.40

Finding the Fourth Proportional to 323,611,054.72, 485,762,018.38 and 139,469,405.40

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Solution

The fourth proportional to 323,611,054.72, 485,762,018.38 and 139,469,405.40 is: 209,352,983.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,611,054.72 : 485,762,018.38 = 139,469,405.40 : x
  2. Step 2: Convert to fraction form
    323,611,054.72/485,762,018.38 = 139,469,405.40/x
  3. Step 3: Cross multiply
    323,611,054.72x = 485,762,018.38 × 139,469,405.40
  4. Step 4: Simplify right side
    323,611,054.72x = 67,748,939,869,362,472
  5. Step 5: Solve for x
    x = 67,748,939,869,362,472/323,611,054.72
  6. Step 6: Final answer
    x = 209,352,983.72

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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.