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Finding the Third Proportional to 360,312.75 and 521,878.50

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Solution

The third proportional to 360,312.75 and 521,878.50 is: 755,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,312.75 : 521,878.50 = 521,878.50 : x
  2. Step 2: Convert to fraction form
    360,312.75/521,878.50 = 521,878.50/x
  3. Step 3: Cross multiply
    360,312.75x = 521,878.50 × 521,878.50
  4. Step 4: Simplify right side
    360,312.75x = 272,357,168,762.25
  5. Step 5: Solve for x
    x = 272,357,168,762.25/360,312.75
  6. Step 6: Final answer
    x = 755,891.01

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.