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Finding the Third Proportional to 245,611.88 and 390,560.63

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Solution

The third proportional to 245,611.88 and 390,560.63 is: 621,051.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,611.88 : 390,560.63 = 390,560.63 : x
  2. Step 2: Convert to fraction form
    245,611.88/390,560.63 = 390,560.63/x
  3. Step 3: Cross multiply
    245,611.88x = 390,560.63 × 390,560.63
  4. Step 4: Simplify right side
    245,611.88x = 152,537,601,800.39
  5. Step 5: Solve for x
    x = 152,537,601,800.39/245,611.88
  6. Step 6: Final answer
    x = 621,051.41

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.