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Finding the Fourth Proportional to 219,210.30, 328,815.45 and 125,639.10

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Solution

The fourth proportional to 219,210.30, 328,815.45 and 125,639.10 is: 188,458.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,210.30 : 328,815.45 = 125,639.10 : x
  2. Step 2: Convert to fraction form
    219,210.30/328,815.45 = 125,639.10/x
  3. Step 3: Cross multiply
    219,210.30x = 328,815.45 × 125,639.10
  4. Step 4: Simplify right side
    219,210.30x = 41,312,077,204.10
  5. Step 5: Solve for x
    x = 41,312,077,204.10/219,210.30
  6. Step 6: Final answer
    x = 188,458.65

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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.