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Finding the Fourth Proportional to 290,686.80, 436,044.60 and 150,718.80

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Solution

The fourth proportional to 290,686.80, 436,044.60 and 150,718.80 is: 226,085.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,686.80 : 436,044.60 = 150,718.80 : x
  2. Step 2: Convert to fraction form
    290,686.80/436,044.60 = 150,718.80/x
  3. Step 3: Cross multiply
    290,686.80x = 436,044.60 × 150,718.80
  4. Step 4: Simplify right side
    290,686.80x = 65,720,118,858.48
  5. Step 5: Solve for x
    x = 65,720,118,858.48/290,686.80
  6. Step 6: Final answer
    x = 226,085.67

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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.