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Finding the Fourth Proportional to 302,172.80, 453,259.52 and 80,556.80

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Solution

The fourth proportional to 302,172.80, 453,259.52 and 80,556.80 is: 120,835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,172.80 : 453,259.52 = 80,556.80 : x
  2. Step 2: Convert to fraction form
    302,172.80/453,259.52 = 80,556.80/x
  3. Step 3: Cross multiply
    302,172.80x = 453,259.52 × 80,556.80
  4. Step 4: Simplify right side
    302,172.80x = 36,513,136,500.74
  5. Step 5: Solve for x
    x = 36,513,136,500.74/302,172.80
  6. Step 6: Final answer
    x = 120,835.29

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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.