Home / 287,403.99-396,480.14-223,303.11

Finding the Fourth Proportional to 287,403.99, 396,480.14 and 223,303.11

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Solution

The fourth proportional to 287,403.99, 396,480.14 and 223,303.11 is: 308,051.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,403.99 : 396,480.14 = 223,303.11 : x
  2. Step 2: Convert to fraction form
    287,403.99/396,480.14 = 223,303.11/x
  3. Step 3: Cross multiply
    287,403.99x = 396,480.14 × 223,303.11
  4. Step 4: Simplify right side
    287,403.99x = 88,535,246,332.83
  5. Step 5: Solve for x
    x = 88,535,246,332.83/287,403.99
  6. Step 6: Final answer
    x = 308,051.56

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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.