Home / 291,219,021.20-436,828,531.80-209,908,548.20

Finding the Fourth Proportional to 291,219,021.20, 436,828,531.80 and 209,908,548.20

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Solution

The fourth proportional to 291,219,021.20, 436,828,531.80 and 209,908,548.20 is: 314,862,822.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,219,021.20 : 436,828,531.80 = 209,908,548.20 : x
  2. Step 2: Convert to fraction form
    291,219,021.20/436,828,531.80 = 209,908,548.20/x
  3. Step 3: Cross multiply
    291,219,021.20x = 436,828,531.80 × 209,908,548.20
  4. Step 4: Simplify right side
    291,219,021.20x = 91,694,042,922,475,536
  5. Step 5: Solve for x
    x = 91,694,042,922,475,536/291,219,021.20
  6. Step 6: Final answer
    x = 314,862,822.30

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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.