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Finding the Fourth Proportional to 319,513.60, 479,270.40 and 97,868.80

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Solution

The fourth proportional to 319,513.60, 479,270.40 and 97,868.80 is: 146,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,513.60 : 479,270.40 = 97,868.80 : x
  2. Step 2: Convert to fraction form
    319,513.60/479,270.40 = 97,868.80/x
  3. Step 3: Cross multiply
    319,513.60x = 479,270.40 × 97,868.80
  4. Step 4: Simplify right side
    319,513.60x = 46,905,618,923.52
  5. Step 5: Solve for x
    x = 46,905,618,923.52/319,513.60
  6. Step 6: Final answer
    x = 146,803.20

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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.