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Finding the Fourth Proportional to 368,426.88, 508,426.56 and 209,450.88

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Solution

The fourth proportional to 368,426.88, 508,426.56 and 209,450.88 is: 289,040.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,426.88 : 508,426.56 = 209,450.88 : x
  2. Step 2: Convert to fraction form
    368,426.88/508,426.56 = 209,450.88/x
  3. Step 3: Cross multiply
    368,426.88x = 508,426.56 × 209,450.88
  4. Step 4: Simplify right side
    368,426.88x = 106,490,390,407.37
  5. Step 5: Solve for x
    x = 106,490,390,407.37/368,426.88
  6. Step 6: Final answer
    x = 289,040.77

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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.