Home / 307,748.80-461,623.20-213,270.40

Finding the Fourth Proportional to 307,748.80, 461,623.20 and 213,270.40

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Solution

The fourth proportional to 307,748.80, 461,623.20 and 213,270.40 is: 319,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,748.80 : 461,623.20 = 213,270.40 : x
  2. Step 2: Convert to fraction form
    307,748.80/461,623.20 = 213,270.40/x
  3. Step 3: Cross multiply
    307,748.80x = 461,623.20 × 213,270.40
  4. Step 4: Simplify right side
    307,748.80x = 98,450,564,513.28
  5. Step 5: Solve for x
    x = 98,450,564,513.28/307,748.80
  6. Step 6: Final answer
    x = 319,905.60

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Similar ratio
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1.5x scale

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.