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Finding the Fourth Proportional to 395,218.41, 545,715.80 and 364,992.67

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Solution

The fourth proportional to 395,218.41, 545,715.80 and 364,992.67 is: 503,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,218.41 : 545,715.80 = 364,992.67 : x
  2. Step 2: Convert to fraction form
    395,218.41/545,715.80 = 364,992.67/x
  3. Step 3: Cross multiply
    395,218.41x = 545,715.80 × 364,992.67
  4. Step 4: Simplify right side
    395,218.41x = 199,182,266,903.19
  5. Step 5: Solve for x
    x = 199,182,266,903.19/395,218.41
  6. Step 6: Final answer
    x = 503,980.23

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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.