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Finding the Fourth Proportional to 318,886.88, 440,057.21 and 175,648.10

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Solution

The fourth proportional to 318,886.88, 440,057.21 and 175,648.10 is: 242,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,886.88 : 440,057.21 = 175,648.10 : x
  2. Step 2: Convert to fraction form
    318,886.88/440,057.21 = 175,648.10/x
  3. Step 3: Cross multiply
    318,886.88x = 440,057.21 × 175,648.10
  4. Step 4: Simplify right side
    318,886.88x = 77,295,209,749.27
  5. Step 5: Solve for x
    x = 77,295,209,749.27/318,886.88
  6. Step 6: Final answer
    x = 242,390.69

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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.