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Finding the Fourth Proportional to 379,322.51, 523,501.28 and 207,266.63

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Solution

The fourth proportional to 379,322.51, 523,501.28 and 207,266.63 is: 286,047.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,322.51 : 523,501.28 = 207,266.63 : x
  2. Step 2: Convert to fraction form
    379,322.51/523,501.28 = 207,266.63/x
  3. Step 3: Cross multiply
    379,322.51x = 523,501.28 × 207,266.63
  4. Step 4: Simplify right side
    379,322.51x = 108,504,345,069.95
  5. Step 5: Solve for x
    x = 108,504,345,069.95/379,322.51
  6. Step 6: Final answer
    x = 286,047.74

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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.