Home / 306,988.56-423,482.04-211,329.72

Finding the Fourth Proportional to 306,988.56, 423,482.04 and 211,329.72

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Solution

The fourth proportional to 306,988.56, 423,482.04 and 211,329.72 is: 291,523.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,988.56 : 423,482.04 = 211,329.72 : x
  2. Step 2: Convert to fraction form
    306,988.56/423,482.04 = 211,329.72/x
  3. Step 3: Cross multiply
    306,988.56x = 423,482.04 × 211,329.72
  4. Step 4: Simplify right side
    306,988.56x = 89,494,340,938.23
  5. Step 5: Solve for x
    x = 89,494,340,938.23/306,988.56
  6. Step 6: Final answer
    x = 291,523.37

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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.