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Finding the Fourth Proportional to 289,995.29, 434,888.31 and 100,404.26

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Solution

The fourth proportional to 289,995.29, 434,888.31 and 100,404.26 is: 150,570.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,995.29 : 434,888.31 = 100,404.26 : x
  2. Step 2: Convert to fraction form
    289,995.29/434,888.31 = 100,404.26/x
  3. Step 3: Cross multiply
    289,995.29x = 434,888.31 × 100,404.26
  4. Step 4: Simplify right side
    289,995.29x = 43,664,638,948.20
  5. Step 5: Solve for x
    x = 43,664,638,948.20/289,995.29
  6. Step 6: Final answer
    x = 150,570.17

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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.