Home / 312,163.34-430,788.47-168,926.45

Finding the Fourth Proportional to 312,163.34, 430,788.47 and 168,926.45

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Solution

The fourth proportional to 312,163.34, 430,788.47 and 168,926.45 is: 233,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,163.34 : 430,788.47 = 168,926.45 : x
  2. Step 2: Convert to fraction form
    312,163.34/430,788.47 = 168,926.45/x
  3. Step 3: Cross multiply
    312,163.34x = 430,788.47 × 168,926.45
  4. Step 4: Simplify right side
    312,163.34x = 72,771,563,939.46
  5. Step 5: Solve for x
    x = 72,771,563,939.46/312,163.34
  6. Step 6: Final answer
    x = 233,120.15

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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.