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Finding the Fourth Proportional to 375,663.36, 518,440.67 and 212,263.25

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Solution

The fourth proportional to 375,663.36, 518,440.67 and 212,263.25 is: 292,937.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,663.36 : 518,440.67 = 212,263.25 : x
  2. Step 2: Convert to fraction form
    375,663.36/518,440.67 = 212,263.25/x
  3. Step 3: Cross multiply
    375,663.36x = 518,440.67 × 212,263.25
  4. Step 4: Simplify right side
    375,663.36x = 110,045,901,546.38
  5. Step 5: Solve for x
    x = 110,045,901,546.38/375,663.36
  6. Step 6: Final answer
    x = 292,937.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.