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Finding the Fourth Proportional to 319,488.70, 479,233.05 and 97,872.70

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Solution

The fourth proportional to 319,488.70, 479,233.05 and 97,872.70 is: 146,809.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,488.70 : 479,233.05 = 97,872.70 : x
  2. Step 2: Convert to fraction form
    319,488.70/479,233.05 = 97,872.70/x
  3. Step 3: Cross multiply
    319,488.70x = 479,233.05 × 97,872.70
  4. Step 4: Simplify right side
    319,488.70x = 46,903,832,532.74
  5. Step 5: Solve for x
    x = 46,903,832,532.74/319,488.70
  6. Step 6: Final answer
    x = 146,809.05

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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.