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Finding the Fourth Proportional to 338,561.40, 507,908.48 and 125,330.95

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Solution

The fourth proportional to 338,561.40, 507,908.48 and 125,330.95 is: 188,021.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,561.40 : 507,908.48 = 125,330.95 : x
  2. Step 2: Convert to fraction form
    338,561.40/507,908.48 = 125,330.95/x
  3. Step 3: Cross multiply
    338,561.40x = 507,908.48 × 125,330.95
  4. Step 4: Simplify right side
    338,561.40x = 63,656,652,311.46
  5. Step 5: Solve for x
    x = 63,656,652,311.46/338,561.40
  6. Step 6: Final answer
    x = 188,021.00

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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.