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Finding the Third Proportional to 290,356 and 435,534

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Solution

The third proportional to 290,356 and 435,534 is: 653,301

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,356 : 435,534 = 435,534 : x
  2. Step 2: Convert to fraction form
    290,356/435,534 = 435,534/x
  3. Step 3: Cross multiply
    290,356x = 435,534 × 435,534
  4. Step 4: Simplify right side
    290,356x = 189,689,865,156
  5. Step 5: Solve for x
    x = 189,689,865,156/290,356
  6. Step 6: Final answer
    x = 653,301

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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.