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Finding the Fourth Proportional to 290,399.40, 435,554.04 and 148,349.64

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Solution

The fourth proportional to 290,399.40, 435,554.04 and 148,349.64 is: 222,501.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,399.40 : 435,554.04 = 148,349.64 : x
  2. Step 2: Convert to fraction form
    290,399.40/435,554.04 = 148,349.64/x
  3. Step 3: Cross multiply
    290,399.40x = 435,554.04 × 148,349.64
  4. Step 4: Simplify right side
    290,399.40x = 64,614,285,034.55
  5. Step 5: Solve for x
    x = 64,614,285,034.55/290,399.40
  6. Step 6: Final answer
    x = 222,501.44

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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.