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Finding the Fourth Proportional to 318,764.88, 439,878.12 and 175,497.72

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Solution

The fourth proportional to 318,764.88, 439,878.12 and 175,497.72 is: 242,177.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,764.88 : 439,878.12 = 175,497.72 : x
  2. Step 2: Convert to fraction form
    318,764.88/439,878.12 = 175,497.72/x
  3. Step 3: Cross multiply
    318,764.88x = 439,878.12 × 175,497.72
  4. Step 4: Simplify right side
    318,764.88x = 77,197,607,137.89
  5. Step 5: Solve for x
    x = 77,197,607,137.89/318,764.88
  6. Step 6: Final answer
    x = 242,177.27

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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.