Home / 258,688,852.20-388,033,278.30-129,316,429.80

Finding the Fourth Proportional to 258,688,852.20, 388,033,278.30 and 129,316,429.80

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Solution

The fourth proportional to 258,688,852.20, 388,033,278.30 and 129,316,429.80 is: 193,974,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,688,852.20 : 388,033,278.30 = 129,316,429.80 : x
  2. Step 2: Convert to fraction form
    258,688,852.20/388,033,278.30 = 129,316,429.80/x
  3. Step 3: Cross multiply
    258,688,852.20x = 388,033,278.30 × 129,316,429.80
  4. Step 4: Simplify right side
    258,688,852.20x = 50,179,078,193,345,816
  5. Step 5: Solve for x
    x = 50,179,078,193,345,816/258,688,852.20
  6. Step 6: Final answer
    x = 193,974,644.70

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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.