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Finding the Fourth Proportional to 290,688.80, 436,047.60 and 150,720.80

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Solution

The fourth proportional to 290,688.80, 436,047.60 and 150,720.80 is: 226,088.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,688.80 : 436,047.60 = 150,720.80 : x
  2. Step 2: Convert to fraction form
    290,688.80/436,047.60 = 150,720.80/x
  3. Step 3: Cross multiply
    290,688.80x = 436,047.60 × 150,720.80
  4. Step 4: Simplify right side
    290,688.80x = 65,721,443,110.08
  5. Step 5: Solve for x
    x = 65,721,443,110.08/290,688.80
  6. Step 6: Final answer
    x = 226,088.67

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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.