Home / 391,586.16-540,421.96-219,501.38

Finding the Fourth Proportional to 391,586.16, 540,421.96 and 219,501.38

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Solution

The fourth proportional to 391,586.16, 540,421.96 and 219,501.38 is: 302,930.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,586.16 : 540,421.96 = 219,501.38 : x
  2. Step 2: Convert to fraction form
    391,586.16/540,421.96 = 219,501.38/x
  3. Step 3: Cross multiply
    391,586.16x = 540,421.96 × 219,501.38
  4. Step 4: Simplify right side
    391,586.16x = 118,623,367,133.14
  5. Step 5: Solve for x
    x = 118,623,367,133.14/391,586.16
  6. Step 6: Final answer
    x = 302,930.44

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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.