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Finding the Fourth Proportional to 311,937.26, 430,082.78 and 260,328.29

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Solution

The fourth proportional to 311,937.26, 430,082.78 and 260,328.29 is: 358,927.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,937.26 : 430,082.78 = 260,328.29 : x
  2. Step 2: Convert to fraction form
    311,937.26/430,082.78 = 260,328.29/x
  3. Step 3: Cross multiply
    311,937.26x = 430,082.78 × 260,328.29
  4. Step 4: Simplify right side
    311,937.26x = 111,962,711,223.79
  5. Step 5: Solve for x
    x = 111,962,711,223.79/311,937.26
  6. Step 6: Final answer
    x = 358,927.03

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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.