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Finding the Fourth Proportional to 318,404.20, 439,394.64 and 175,164.40

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Solution

The fourth proportional to 318,404.20, 439,394.64 and 175,164.40 is: 241,725.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,404.20 : 439,394.64 = 175,164.40 : x
  2. Step 2: Convert to fraction form
    318,404.20/439,394.64 = 175,164.40/x
  3. Step 3: Cross multiply
    318,404.20x = 439,394.64 × 175,164.40
  4. Step 4: Simplify right side
    318,404.20x = 76,966,298,478.82
  5. Step 5: Solve for x
    x = 76,966,298,478.82/318,404.20
  6. Step 6: Final answer
    x = 241,725.14

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1.5x scale

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.