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Finding the Fourth Proportional to 318,870.48, 440,032.20 and 173,673

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Solution

The fourth proportional to 318,870.48, 440,032.20 and 173,673 is: 239,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,870.48 : 440,032.20 = 173,673 : x
  2. Step 2: Convert to fraction form
    318,870.48/440,032.20 = 173,673/x
  3. Step 3: Cross multiply
    318,870.48x = 440,032.20 × 173,673
  4. Step 4: Simplify right side
    318,870.48x = 76,421,712,270.60
  5. Step 5: Solve for x
    x = 76,421,712,270.60/318,870.48
  6. Step 6: Final answer
    x = 239,663.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.