Home / 289,907.03-434,901.56-90,247.57

Finding the Fourth Proportional to 289,907.03, 434,901.56 and 90,247.57

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Solution

The fourth proportional to 289,907.03, 434,901.56 and 90,247.57 is: 135,384.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,907.03 : 434,901.56 = 90,247.57 : x
  2. Step 2: Convert to fraction form
    289,907.03/434,901.56 = 90,247.57/x
  3. Step 3: Cross multiply
    289,907.03x = 434,901.56 × 90,247.57
  4. Step 4: Simplify right side
    289,907.03x = 39,248,807,440.72
  5. Step 5: Solve for x
    x = 39,248,807,440.72/289,907.03
  6. Step 6: Final answer
    x = 135,384.12

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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.