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Finding the Third Proportional to 58,931,328 and 128,567,280

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Solution

The third proportional to 58,931,328 and 128,567,280 is: 280,488,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,931,328 : 128,567,280 = 128,567,280 : x
  2. Step 2: Convert to fraction form
    58,931,328/128,567,280 = 128,567,280/x
  3. Step 3: Cross multiply
    58,931,328x = 128,567,280 × 128,567,280
  4. Step 4: Simplify right side
    58,931,328x = 16,529,545,486,598,400
  5. Step 5: Solve for x
    x = 16,529,545,486,598,400/58,931,328
  6. Step 6: Final answer
    x = 280,488,257.22

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.