Home / 317,758.28-438,323.40-190,360.08

Finding the Fourth Proportional to 317,758.28, 438,323.40 and 190,360.08

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Solution

The fourth proportional to 317,758.28, 438,323.40 and 190,360.08 is: 262,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,758.28 : 438,323.40 = 190,360.08 : x
  2. Step 2: Convert to fraction form
    317,758.28/438,323.40 = 190,360.08/x
  3. Step 3: Cross multiply
    317,758.28x = 438,323.40 × 190,360.08
  4. Step 4: Simplify right side
    317,758.28x = 83,439,277,489.87
  5. Step 5: Solve for x
    x = 83,439,277,489.87/317,758.28
  6. Step 6: Final answer
    x = 262,587.27

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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.