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Finding the Fourth Proportional to 302,969.40, 453,935.70 and 192,031.80

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Solution

The fourth proportional to 302,969.40, 453,935.70 and 192,031.80 is: 287,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,969.40 : 453,935.70 = 192,031.80 : x
  2. Step 2: Convert to fraction form
    302,969.40/453,935.70 = 192,031.80/x
  3. Step 3: Cross multiply
    302,969.40x = 453,935.70 × 192,031.80
  4. Step 4: Simplify right side
    302,969.40x = 87,170,089,555.26
  5. Step 5: Solve for x
    x = 87,170,089,555.26/302,969.40
  6. Step 6: Final answer
    x = 287,719.12

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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.