Home / 317,618.32-438,280.68-190,290.64

Finding the Fourth Proportional to 317,618.32, 438,280.68 and 190,290.64

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Solution

The fourth proportional to 317,618.32, 438,280.68 and 190,290.64 is: 262,581.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,618.32 : 438,280.68 = 190,290.64 : x
  2. Step 2: Convert to fraction form
    317,618.32/438,280.68 = 190,290.64/x
  3. Step 3: Cross multiply
    317,618.32x = 438,280.68 × 190,290.64
  4. Step 4: Simplify right side
    317,618.32x = 83,400,711,096.84
  5. Step 5: Solve for x
    x = 83,400,711,096.84/317,618.32
  6. Step 6: Final answer
    x = 262,581.55

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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.