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Finding the Fourth Proportional to 316,570.65, 436,850.71 and 173,303.11

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Solution

The fourth proportional to 316,570.65, 436,850.71 and 173,303.11 is: 239,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,570.65 : 436,850.71 = 173,303.11 : x
  2. Step 2: Convert to fraction form
    316,570.65/436,850.71 = 173,303.11/x
  3. Step 3: Cross multiply
    316,570.65x = 436,850.71 × 173,303.11
  4. Step 4: Simplify right side
    316,570.65x = 75,707,586,648.71
  5. Step 5: Solve for x
    x = 75,707,586,648.71/316,570.65
  6. Step 6: Final answer
    x = 239,149.10

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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.