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Finding the Fourth Proportional to 368,699.87, 508,786.47 and 207,549.56

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Solution

The fourth proportional to 368,699.87, 508,786.47 and 207,549.56 is: 286,407.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,699.87 : 508,786.47 = 207,549.56 : x
  2. Step 2: Convert to fraction form
    368,699.87/508,786.47 = 207,549.56/x
  3. Step 3: Cross multiply
    368,699.87x = 508,786.47 × 207,549.56
  4. Step 4: Simplify right side
    368,699.87x = 105,598,409,254.42
  5. Step 5: Solve for x
    x = 105,598,409,254.42/368,699.87
  6. Step 6: Final answer
    x = 286,407.50

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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.