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Finding the Fourth Proportional to 302,321,203.80, 453,481,805.70 and 129,768,653.40

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Solution

The fourth proportional to 302,321,203.80, 453,481,805.70 and 129,768,653.40 is: 194,652,980.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,321,203.80 : 453,481,805.70 = 129,768,653.40 : x
  2. Step 2: Convert to fraction form
    302,321,203.80/453,481,805.70 = 129,768,653.40/x
  3. Step 3: Cross multiply
    302,321,203.80x = 453,481,805.70 × 129,768,653.40
  4. Step 4: Simplify right side
    302,321,203.80x = 58,847,723,267,089,448
  5. Step 5: Solve for x
    x = 58,847,723,267,089,448/302,321,203.80
  6. Step 6: Final answer
    x = 194,652,980.10

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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.