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Finding the Fourth Proportional to 290,016.40, 435,024.60 and 188,539.60

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Solution

The fourth proportional to 290,016.40, 435,024.60 and 188,539.60 is: 282,809.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,016.40 : 435,024.60 = 188,539.60 : x
  2. Step 2: Convert to fraction form
    290,016.40/435,024.60 = 188,539.60/x
  3. Step 3: Cross multiply
    290,016.40x = 435,024.60 × 188,539.60
  4. Step 4: Simplify right side
    290,016.40x = 82,019,364,074.16
  5. Step 5: Solve for x
    x = 82,019,364,074.16/290,016.40
  6. Step 6: Final answer
    x = 282,809.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.