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Finding the Fourth Proportional to 318,294.51, 439,209.45 and 182,320.35

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Solution

The fourth proportional to 318,294.51, 439,209.45 and 182,320.35 is: 251,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,294.51 : 439,209.45 = 182,320.35 : x
  2. Step 2: Convert to fraction form
    318,294.51/439,209.45 = 182,320.35/x
  3. Step 3: Cross multiply
    318,294.51x = 439,209.45 × 182,320.35
  4. Step 4: Simplify right side
    318,294.51x = 80,076,820,647.31
  5. Step 5: Solve for x
    x = 80,076,820,647.31/318,294.51
  6. Step 6: Final answer
    x = 251,580.90

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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.