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Finding the Fourth Proportional to 343,878.30, 515,817.45 and 302,406.30

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Solution

The fourth proportional to 343,878.30, 515,817.45 and 302,406.30 is: 453,609.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,878.30 : 515,817.45 = 302,406.30 : x
  2. Step 2: Convert to fraction form
    343,878.30/515,817.45 = 302,406.30/x
  3. Step 3: Cross multiply
    343,878.30x = 515,817.45 × 302,406.30
  4. Step 4: Simplify right side
    343,878.30x = 155,986,446,529.94
  5. Step 5: Solve for x
    x = 155,986,446,529.94/343,878.30
  6. Step 6: Final answer
    x = 453,609.45

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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.