Home / 289,908.03-434,903.06-90,248.57

Finding the Fourth Proportional to 289,908.03, 434,903.06 and 90,248.57

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Solution

The fourth proportional to 289,908.03, 434,903.06 and 90,248.57 is: 135,385.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,908.03 : 434,903.06 = 90,248.57 : x
  2. Step 2: Convert to fraction form
    289,908.03/434,903.06 = 90,248.57/x
  3. Step 3: Cross multiply
    289,908.03x = 434,903.06 × 90,248.57
  4. Step 4: Simplify right side
    289,908.03x = 39,249,379,253.62
  5. Step 5: Solve for x
    x = 39,249,379,253.62/289,908.03
  6. Step 6: Final answer
    x = 135,385.62

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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.