Home / 289,545.64-434,376.40-100,012.92

Finding the Fourth Proportional to 289,545.64, 434,376.40 and 100,012.92

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Solution

The fourth proportional to 289,545.64, 434,376.40 and 100,012.92 is: 150,039.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,545.64 : 434,376.40 = 100,012.92 : x
  2. Step 2: Convert to fraction form
    289,545.64/434,376.40 = 100,012.92/x
  3. Step 3: Cross multiply
    289,545.64x = 434,376.40 × 100,012.92
  4. Step 4: Simplify right side
    289,545.64x = 43,443,252,143.09
  5. Step 5: Solve for x
    x = 43,443,252,143.09/289,545.64
  6. Step 6: Final answer
    x = 150,039.39

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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.