Home / 278,453.34-384,265.98-151,128.95

Finding the Fourth Proportional to 278,453.34, 384,265.98 and 151,128.95

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Solution

The fourth proportional to 278,453.34, 384,265.98 and 151,128.95 is: 208,558.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,453.34 : 384,265.98 = 151,128.95 : x
  2. Step 2: Convert to fraction form
    278,453.34/384,265.98 = 151,128.95/x
  3. Step 3: Cross multiply
    278,453.34x = 384,265.98 × 151,128.95
  4. Step 4: Simplify right side
    278,453.34x = 58,073,712,156.79
  5. Step 5: Solve for x
    x = 58,073,712,156.79/278,453.34
  6. Step 6: Final answer
    x = 208,558.15

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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.