Home / 289,357.11-398,886.93-203,043.51

Finding the Fourth Proportional to 289,357.11, 398,886.93 and 203,043.51

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Solution

The fourth proportional to 289,357.11, 398,886.93 and 203,043.51 is: 279,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,357.11 : 398,886.93 = 203,043.51 : x
  2. Step 2: Convert to fraction form
    289,357.11/398,886.93 = 203,043.51/x
  3. Step 3: Cross multiply
    289,357.11x = 398,886.93 × 203,043.51
  4. Step 4: Simplify right side
    289,357.11x = 80,991,402,360.32
  5. Step 5: Solve for x
    x = 80,991,402,360.32/289,357.11
  6. Step 6: Final answer
    x = 279,901.20

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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.