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Finding the Third Proportional to 256,423.50 and 376,312.50

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Solution

The third proportional to 256,423.50 and 376,312.50 is: 552,254.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,423.50 : 376,312.50 = 376,312.50 : x
  2. Step 2: Convert to fraction form
    256,423.50/376,312.50 = 376,312.50/x
  3. Step 3: Cross multiply
    256,423.50x = 376,312.50 × 376,312.50
  4. Step 4: Simplify right side
    256,423.50x = 141,611,097,656.25
  5. Step 5: Solve for x
    x = 141,611,097,656.25/256,423.50
  6. Step 6: Final answer
    x = 552,254.76

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.