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Finding the Fourth Proportional to 318,775.66, 439,913.28 and 175,536.28

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Solution

The fourth proportional to 318,775.66, 439,913.28 and 175,536.28 is: 242,241.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,775.66 : 439,913.28 = 175,536.28 : x
  2. Step 2: Convert to fraction form
    318,775.66/439,913.28 = 175,536.28/x
  3. Step 3: Cross multiply
    318,775.66x = 439,913.28 × 175,536.28
  4. Step 4: Simplify right side
    318,775.66x = 77,220,740,693.80
  5. Step 5: Solve for x
    x = 77,220,740,693.80/318,775.66
  6. Step 6: Final answer
    x = 242,241.65

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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.