Home / 318,670.35-439,725.15-215,529.41

Finding the Fourth Proportional to 318,670.35, 439,725.15 and 215,529.41

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Solution

The fourth proportional to 318,670.35, 439,725.15 and 215,529.41 is: 297,403.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,670.35 : 439,725.15 = 215,529.41 : x
  2. Step 2: Convert to fraction form
    318,670.35/439,725.15 = 215,529.41/x
  3. Step 3: Cross multiply
    318,670.35x = 439,725.15 × 215,529.41
  4. Step 4: Simplify right side
    318,670.35x = 94,773,699,943.04
  5. Step 5: Solve for x
    x = 94,773,699,943.04/318,670.35
  6. Step 6: Final answer
    x = 297,403.57

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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.