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Finding the Fourth Proportional to 318,668.82, 439,775.52 and 175,442.20

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Solution

The fourth proportional to 318,668.82, 439,775.52 and 175,442.20 is: 242,117.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,668.82 : 439,775.52 = 175,442.20 : x
  2. Step 2: Convert to fraction form
    318,668.82/439,775.52 = 175,442.20/x
  3. Step 3: Cross multiply
    318,668.82x = 439,775.52 × 175,442.20
  4. Step 4: Simplify right side
    318,668.82x = 77,155,184,734.94
  5. Step 5: Solve for x
    x = 77,155,184,734.94/318,668.82
  6. Step 6: Final answer
    x = 242,117.14

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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.