Home / 291,219,018.20-436,828,527.30-209,908,545.20

Finding the Fourth Proportional to 291,219,018.20, 436,828,527.30 and 209,908,545.20

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Solution

The fourth proportional to 291,219,018.20, 436,828,527.30 and 209,908,545.20 is: 314,862,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,219,018.20 : 436,828,527.30 = 209,908,545.20 : x
  2. Step 2: Convert to fraction form
    291,219,018.20/436,828,527.30 = 209,908,545.20/x
  3. Step 3: Cross multiply
    291,219,018.20x = 436,828,527.30 × 209,908,545.20
  4. Step 4: Simplify right side
    291,219,018.20x = 91,694,040,667,401,488
  5. Step 5: Solve for x
    x = 91,694,040,667,401,488/291,219,018.20
  6. Step 6: Final answer
    x = 314,862,817.80

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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.