Home / 287,683.15-397,143.62-223,009.51

Finding the Fourth Proportional to 287,683.15, 397,143.62 and 223,009.51

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Solution

The fourth proportional to 287,683.15, 397,143.62 and 223,009.51 is: 307,862.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,683.15 : 397,143.62 = 223,009.51 : x
  2. Step 2: Convert to fraction form
    287,683.15/397,143.62 = 223,009.51/x
  3. Step 3: Cross multiply
    287,683.15x = 397,143.62 × 223,009.51
  4. Step 4: Simplify right side
    287,683.15x = 88,566,802,824.21
  5. Step 5: Solve for x
    x = 88,566,802,824.21/287,683.15
  6. Step 6: Final answer
    x = 307,862.33

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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.