Home / 316,280.91-436,648.11-209,161.65

Finding the Fourth Proportional to 316,280.91, 436,648.11 and 209,161.65

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Solution

The fourth proportional to 316,280.91, 436,648.11 and 209,161.65 is: 288,762.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,280.91 : 436,648.11 = 209,161.65 : x
  2. Step 2: Convert to fraction form
    316,280.91/436,648.11 = 209,161.65/x
  3. Step 3: Cross multiply
    316,280.91x = 436,648.11 × 209,161.65
  4. Step 4: Simplify right side
    316,280.91x = 91,330,039,156.98
  5. Step 5: Solve for x
    x = 91,330,039,156.98/316,280.91
  6. Step 6: Final answer
    x = 288,762.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.