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Finding the Fourth Proportional to 290,929.38, 436,389.68 and 130,892.30

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Solution

The fourth proportional to 290,929.38, 436,389.68 and 130,892.30 is: 196,336.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,929.38 : 436,389.68 = 130,892.30 : x
  2. Step 2: Convert to fraction form
    290,929.38/436,389.68 = 130,892.30/x
  3. Step 3: Cross multiply
    290,929.38x = 436,389.68 × 130,892.30
  4. Step 4: Simplify right side
    290,929.38x = 57,120,048,911.46
  5. Step 5: Solve for x
    x = 57,120,048,911.46/290,929.38
  6. Step 6: Final answer
    x = 196,336.47

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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.