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Finding the Fourth Proportional to 318,656, 439,774.56 and 175,445.12

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Solution

The fourth proportional to 318,656, 439,774.56 and 175,445.12 is: 242,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,656 : 439,774.56 = 175,445.12 : x
  2. Step 2: Convert to fraction form
    318,656/439,774.56 = 175,445.12/x
  3. Step 3: Cross multiply
    318,656x = 439,774.56 × 175,445.12
  4. Step 4: Simplify right side
    318,656x = 77,156,300,452.15
  5. Step 5: Solve for x
    x = 77,156,300,452.15/318,656
  6. Step 6: Final answer
    x = 242,130.39

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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.