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Finding the Fourth Proportional to 286,800.72, 429,813.56 and 109,210.88

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Solution

The fourth proportional to 286,800.72, 429,813.56 and 109,210.88 is: 163,668.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,800.72 : 429,813.56 = 109,210.88 : x
  2. Step 2: Convert to fraction form
    286,800.72/429,813.56 = 109,210.88/x
  3. Step 3: Cross multiply
    286,800.72x = 429,813.56 × 109,210.88
  4. Step 4: Simplify right side
    286,800.72x = 46,940,317,123.53
  5. Step 5: Solve for x
    x = 46,940,317,123.53/286,800.72
  6. Step 6: Final answer
    x = 163,668.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.