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Finding the Fourth Proportional to 318,698.81, 439,795.81 and 175,459.92

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Solution

The fourth proportional to 318,698.81, 439,795.81 and 175,459.92 is: 242,129.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,698.81 : 439,795.81 = 175,459.92 : x
  2. Step 2: Convert to fraction form
    318,698.81/439,795.81 = 175,459.92/x
  3. Step 3: Cross multiply
    318,698.81x = 439,795.81 × 175,459.92
  4. Step 4: Simplify right side
    318,698.81x = 77,166,537,638.94
  5. Step 5: Solve for x
    x = 77,166,537,638.94/318,698.81
  6. Step 6: Final answer
    x = 242,129.98

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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.