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Finding the Third Proportional to 145,719,281 and 315,652,378

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Solution

The third proportional to 145,719,281 and 315,652,378 is: 683,755,938.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,719,281 : 315,652,378 = 315,652,378 : x
  2. Step 2: Convert to fraction form
    145,719,281/315,652,378 = 315,652,378/x
  3. Step 3: Cross multiply
    145,719,281x = 315,652,378 × 315,652,378
  4. Step 4: Simplify right side
    145,719,281x = 99,636,423,737,054,880
  5. Step 5: Solve for x
    x = 99,636,423,737,054,880/145,719,281
  6. Step 6: Final answer
    x = 683,755,938.50

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.