Home / 317,823.08-438,619.38-196,988.12

Finding the Fourth Proportional to 317,823.08, 438,619.38 and 196,988.12

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Solution

The fourth proportional to 317,823.08, 438,619.38 and 196,988.12 is: 271,858.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,823.08 : 438,619.38 = 196,988.12 : x
  2. Step 2: Convert to fraction form
    317,823.08/438,619.38 = 196,988.12/x
  3. Step 3: Cross multiply
    317,823.08x = 438,619.38 × 196,988.12
  4. Step 4: Simplify right side
    317,823.08x = 86,402,807,061.77
  5. Step 5: Solve for x
    x = 86,402,807,061.77/317,823.08
  6. Step 6: Final answer
    x = 271,858.19

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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.