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Finding the Fourth Proportional to 290,293,651.80, 435,440,477.70 and 217,734,240.60

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Solution

The fourth proportional to 290,293,651.80, 435,440,477.70 and 217,734,240.60 is: 326,601,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,293,651.80 : 435,440,477.70 = 217,734,240.60 : x
  2. Step 2: Convert to fraction form
    290,293,651.80/435,440,477.70 = 217,734,240.60/x
  3. Step 3: Cross multiply
    290,293,651.80x = 435,440,477.70 × 217,734,240.60
  4. Step 4: Simplify right side
    290,293,651.80x = 94,810,301,738,510,736
  5. Step 5: Solve for x
    x = 94,810,301,738,510,736/290,293,651.80
  6. Step 6: Final answer
    x = 326,601,360.90

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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.