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Finding the Fourth Proportional to 290,154.06, 400,420.49 and 162,837.45

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Solution

The fourth proportional to 290,154.06, 400,420.49 and 162,837.45 is: 224,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,154.06 : 400,420.49 = 162,837.45 : x
  2. Step 2: Convert to fraction form
    290,154.06/400,420.49 = 162,837.45/x
  3. Step 3: Cross multiply
    290,154.06x = 400,420.49 × 162,837.45
  4. Step 4: Simplify right side
    290,154.06x = 65,203,450,705.16
  5. Step 5: Solve for x
    x = 65,203,450,705.16/290,154.06
  6. Step 6: Final answer
    x = 224,720.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.