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Finding the Fourth Proportional to 368,923.74, 554,123.10 and 356,817.48

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Solution

The fourth proportional to 368,923.74, 554,123.10 and 356,817.48 is: 535,939.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,923.74 : 554,123.10 = 356,817.48 : x
  2. Step 2: Convert to fraction form
    368,923.74/554,123.10 = 356,817.48/x
  3. Step 3: Cross multiply
    368,923.74x = 554,123.10 × 356,817.48
  4. Step 4: Simplify right side
    368,923.74x = 197,720,808,151.79
  5. Step 5: Solve for x
    x = 197,720,808,151.79/368,923.74
  6. Step 6: Final answer
    x = 535,939.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.