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Finding the Fourth Proportional to 290,006.70, 434,664.45 and 121,526.70

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Solution

The fourth proportional to 290,006.70, 434,664.45 and 121,526.70 is: 182,145.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,006.70 : 434,664.45 = 121,526.70 : x
  2. Step 2: Convert to fraction form
    290,006.70/434,664.45 = 121,526.70/x
  3. Step 3: Cross multiply
    290,006.70x = 434,664.45 × 121,526.70
  4. Step 4: Simplify right side
    290,006.70x = 52,823,336,215.82
  5. Step 5: Solve for x
    x = 52,823,336,215.82/290,006.70
  6. Step 6: Final answer
    x = 182,145.23

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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.