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Finding the Fourth Proportional to 208,421.05, 313,050.06 and 124,345.48

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Solution

The fourth proportional to 208,421.05, 313,050.06 and 124,345.48 is: 186,767.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,421.05 : 313,050.06 = 124,345.48 : x
  2. Step 2: Convert to fraction form
    208,421.05/313,050.06 = 124,345.48/x
  3. Step 3: Cross multiply
    208,421.05x = 313,050.06 × 124,345.48
  4. Step 4: Simplify right side
    208,421.05x = 38,926,357,787.75
  5. Step 5: Solve for x
    x = 38,926,357,787.75/208,421.05
  6. Step 6: Final answer
    x = 186,767.89

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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.