Home / 212,505.57-318,681.78-70,324.59

Finding the Fourth Proportional to 212,505.57, 318,681.78 and 70,324.59

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Solution

The fourth proportional to 212,505.57, 318,681.78 and 70,324.59 is: 105,461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,505.57 : 318,681.78 = 70,324.59 : x
  2. Step 2: Convert to fraction form
    212,505.57/318,681.78 = 70,324.59/x
  3. Step 3: Cross multiply
    212,505.57x = 318,681.78 × 70,324.59
  4. Step 4: Simplify right side
    212,505.57x = 22,411,165,518.97
  5. Step 5: Solve for x
    x = 22,411,165,518.97/212,505.57
  6. Step 6: Final answer
    x = 105,461.54

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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.