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Finding the Third Proportional to 290,358 and 435,537

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Solution

The third proportional to 290,358 and 435,537 is: 653,305.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,358 : 435,537 = 435,537 : x
  2. Step 2: Convert to fraction form
    290,358/435,537 = 435,537/x
  3. Step 3: Cross multiply
    290,358x = 435,537 × 435,537
  4. Step 4: Simplify right side
    290,358x = 189,692,478,369
  5. Step 5: Solve for x
    x = 189,692,478,369/290,358
  6. Step 6: Final answer
    x = 653,305.50

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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.