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Finding the Fourth Proportional to 336,710.40, 505,045.76 and 126,330.56

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Solution

The fourth proportional to 336,710.40, 505,045.76 and 126,330.56 is: 189,488.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,710.40 : 505,045.76 = 126,330.56 : x
  2. Step 2: Convert to fraction form
    336,710.40/505,045.76 = 126,330.56/x
  3. Step 3: Cross multiply
    336,710.40x = 505,045.76 × 126,330.56
  4. Step 4: Simplify right side
    336,710.40x = 63,802,713,686.43
  5. Step 5: Solve for x
    x = 63,802,713,686.43/336,710.40
  6. Step 6: Final answer
    x = 189,488.40

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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.