Home / 289,434.03-434,193.08-89,770.50

Finding the Fourth Proportional to 289,434.03, 434,193.08 and 89,770.50

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Solution

The fourth proportional to 289,434.03, 434,193.08 and 89,770.50 is: 134,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,434.03 : 434,193.08 = 89,770.50 : x
  2. Step 2: Convert to fraction form
    289,434.03/434,193.08 = 89,770.50/x
  3. Step 3: Cross multiply
    289,434.03x = 434,193.08 × 89,770.50
  4. Step 4: Simplify right side
    289,434.03x = 38,977,731,417.89
  5. Step 5: Solve for x
    x = 38,977,731,417.89/289,434.03
  6. Step 6: Final answer
    x = 134,668.79

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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.