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Finding the Fourth Proportional to 290,288.90, 435,460.83 and 112,809.60

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Solution

The fourth proportional to 290,288.90, 435,460.83 and 112,809.60 is: 169,225.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,288.90 : 435,460.83 = 112,809.60 : x
  2. Step 2: Convert to fraction form
    290,288.90/435,460.83 = 112,809.60/x
  3. Step 3: Cross multiply
    290,288.90x = 435,460.83 × 112,809.60
  4. Step 4: Simplify right side
    290,288.90x = 49,124,162,047.97
  5. Step 5: Solve for x
    x = 49,124,162,047.97/290,288.90
  6. Step 6: Final answer
    x = 169,225.08

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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.