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Finding the Fourth Proportional to 354,951.99, 490,351.93 and 307,122.30

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Solution

The fourth proportional to 354,951.99, 490,351.93 and 307,122.30 is: 424,277.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,951.99 : 490,351.93 = 307,122.30 : x
  2. Step 2: Convert to fraction form
    354,951.99/490,351.93 = 307,122.30/x
  3. Step 3: Cross multiply
    354,951.99x = 490,351.93 × 307,122.30
  4. Step 4: Simplify right side
    354,951.99x = 150,598,011,783.23
  5. Step 5: Solve for x
    x = 150,598,011,783.23/354,951.99
  6. Step 6: Final answer
    x = 424,277.13

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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.