Home / 393,061.03-542,421.49-223,295.16

Finding the Fourth Proportional to 393,061.03, 542,421.49 and 223,295.16

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Solution

The fourth proportional to 393,061.03, 542,421.49 and 223,295.16 is: 308,145.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,061.03 : 542,421.49 = 223,295.16 : x
  2. Step 2: Convert to fraction form
    393,061.03/542,421.49 = 223,295.16/x
  3. Step 3: Cross multiply
    393,061.03x = 542,421.49 × 223,295.16
  4. Step 4: Simplify right side
    393,061.03x = 121,120,093,396.99
  5. Step 5: Solve for x
    x = 121,120,093,396.99/393,061.03
  6. Step 6: Final answer
    x = 308,145.77

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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.