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Finding the Fourth Proportional to 290,820.20, 435,999.90 and 159,492.20

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Solution

The fourth proportional to 290,820.20, 435,999.90 and 159,492.20 is: 239,111.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,820.20 : 435,999.90 = 159,492.20 : x
  2. Step 2: Convert to fraction form
    290,820.20/435,999.90 = 159,492.20/x
  3. Step 3: Cross multiply
    290,820.20x = 435,999.90 × 159,492.20
  4. Step 4: Simplify right side
    290,820.20x = 69,538,583,250.78
  5. Step 5: Solve for x
    x = 69,538,583,250.78/290,820.20
  6. Step 6: Final answer
    x = 239,111.94

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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.