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Finding the Third Proportional to 55,390,630.50 and 128,219,395.50

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Solution

The third proportional to 55,390,630.50 and 128,219,395.50 is: 296,804,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390,630.50 : 128,219,395.50 = 128,219,395.50 : x
  2. Step 2: Convert to fraction form
    55,390,630.50/128,219,395.50 = 128,219,395.50/x
  3. Step 3: Cross multiply
    55,390,630.50x = 128,219,395.50 × 128,219,395.50
  4. Step 4: Simplify right side
    55,390,630.50x = 16,440,213,382,385,420
  5. Step 5: Solve for x
    x = 16,440,213,382,385,420/55,390,630.50
  6. Step 6: Final answer
    x = 296,804,951.20

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.