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Finding the Third Proportional to 207,312 and 435,513

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Solution

The third proportional to 207,312 and 435,513 is: 914,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,312 : 435,513 = 435,513 : x
  2. Step 2: Convert to fraction form
    207,312/435,513 = 435,513/x
  3. Step 3: Cross multiply
    207,312x = 435,513 × 435,513
  4. Step 4: Simplify right side
    207,312x = 189,671,573,169
  5. Step 5: Solve for x
    x = 189,671,573,169/207,312
  6. Step 6: Final answer
    x = 914,908.80

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.