Home / 318,623.94-439,743.02-191,307.72

Finding the Fourth Proportional to 318,623.94, 439,743.02 and 191,307.72

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Solution

The fourth proportional to 318,623.94, 439,743.02 and 191,307.72 is: 264,029.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,623.94 : 439,743.02 = 191,307.72 : x
  2. Step 2: Convert to fraction form
    318,623.94/439,743.02 = 191,307.72/x
  3. Step 3: Cross multiply
    318,623.94x = 439,743.02 × 191,307.72
  4. Step 4: Simplify right side
    318,623.94x = 84,126,234,542.11
  5. Step 5: Solve for x
    x = 84,126,234,542.11/318,623.94
  6. Step 6: Final answer
    x = 264,029.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.