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Finding the Fourth Proportional to 318,148.59, 439,045.28 and 174,911.07

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Solution

The fourth proportional to 318,148.59, 439,045.28 and 174,911.07 is: 241,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,148.59 : 439,045.28 = 174,911.07 : x
  2. Step 2: Convert to fraction form
    318,148.59/439,045.28 = 174,911.07/x
  3. Step 3: Cross multiply
    318,148.59x = 439,045.28 × 174,911.07
  4. Step 4: Simplify right side
    318,148.59x = 76,793,878,828.69
  5. Step 5: Solve for x
    x = 76,793,878,828.69/318,148.59
  6. Step 6: Final answer
    x = 241,377.40

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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.