Home / 219,925.71-303,479.33-129,285.50

Finding the Fourth Proportional to 219,925.71, 303,479.33 and 129,285.50

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Solution

The fourth proportional to 219,925.71, 303,479.33 and 129,285.50 is: 178,403.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,925.71 : 303,479.33 = 129,285.50 : x
  2. Step 2: Convert to fraction form
    219,925.71/303,479.33 = 129,285.50/x
  3. Step 3: Cross multiply
    219,925.71x = 303,479.33 × 129,285.50
  4. Step 4: Simplify right side
    219,925.71x = 39,235,474,754.89
  5. Step 5: Solve for x
    x = 39,235,474,754.89/219,925.71
  6. Step 6: Final answer
    x = 178,403.31

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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.