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Finding the Fourth Proportional to 318,362.40, 439,337.66 and 175,119.30

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Solution

The fourth proportional to 318,362.40, 439,337.66 and 175,119.30 is: 241,663.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,362.40 : 439,337.66 = 175,119.30 : x
  2. Step 2: Convert to fraction form
    318,362.40/439,337.66 = 175,119.30/x
  3. Step 3: Cross multiply
    318,362.40x = 439,337.66 × 175,119.30
  4. Step 4: Simplify right side
    318,362.40x = 76,936,502,607.24
  5. Step 5: Solve for x
    x = 76,936,502,607.24/318,362.40
  6. Step 6: Final answer
    x = 241,663.28

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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.