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Finding the Fourth Proportional to 287,465.55, 429,176.97 and 219,642.54

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Solution

The fourth proportional to 287,465.55, 429,176.97 and 219,642.54 is: 327,919.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,465.55 : 429,176.97 = 219,642.54 : x
  2. Step 2: Convert to fraction form
    287,465.55/429,176.97 = 219,642.54/x
  3. Step 3: Cross multiply
    287,465.55x = 429,176.97 × 219,642.54
  4. Step 4: Simplify right side
    287,465.55x = 94,265,519,800.30
  5. Step 5: Solve for x
    x = 94,265,519,800.30/287,465.55
  6. Step 6: Final answer
    x = 327,919.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.