Home / 207,178,004.20-310,767,006.30-139,053,332.20

Finding the Fourth Proportional to 207,178,004.20, 310,767,006.30 and 139,053,332.20

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Solution

The fourth proportional to 207,178,004.20, 310,767,006.30 and 139,053,332.20 is: 208,579,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,178,004.20 : 310,767,006.30 = 139,053,332.20 : x
  2. Step 2: Convert to fraction form
    207,178,004.20/310,767,006.30 = 139,053,332.20/x
  3. Step 3: Cross multiply
    207,178,004.20x = 310,767,006.30 × 139,053,332.20
  4. Step 4: Simplify right side
    207,178,004.20x = 43,213,187,763,833,392
  5. Step 5: Solve for x
    x = 43,213,187,763,833,392/207,178,004.20
  6. Step 6: Final answer
    x = 208,579,998.30

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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.