Home / 278,728.85-384,639.36-162,434.91

Finding the Fourth Proportional to 278,728.85, 384,639.36 and 162,434.91

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Solution

The fourth proportional to 278,728.85, 384,639.36 and 162,434.91 is: 224,156.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,728.85 : 384,639.36 = 162,434.91 : x
  2. Step 2: Convert to fraction form
    278,728.85/384,639.36 = 162,434.91/x
  3. Step 3: Cross multiply
    278,728.85x = 384,639.36 × 162,434.91
  4. Step 4: Simplify right side
    278,728.85x = 62,478,857,494.77
  5. Step 5: Solve for x
    x = 62,478,857,494.77/278,728.85
  6. Step 6: Final answer
    x = 224,156.41

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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.