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Finding the Fourth Proportional to 290,145.90, 400,298.68 and 189,602.22

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Solution

The fourth proportional to 290,145.90, 400,298.68 and 189,602.22 is: 261,583.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,145.90 : 400,298.68 = 189,602.22 : x
  2. Step 2: Convert to fraction form
    290,145.90/400,298.68 = 189,602.22/x
  3. Step 3: Cross multiply
    290,145.90x = 400,298.68 × 189,602.22
  4. Step 4: Simplify right side
    290,145.90x = 75,897,518,391.07
  5. Step 5: Solve for x
    x = 75,897,518,391.07/290,145.90
  6. Step 6: Final answer
    x = 261,583.98

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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.