Home / 278,840.79-384,799.57-151,516.40

Finding the Fourth Proportional to 278,840.79, 384,799.57 and 151,516.40

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Solution

The fourth proportional to 278,840.79, 384,799.57 and 151,516.40 is: 209,092.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,840.79 : 384,799.57 = 151,516.40 : x
  2. Step 2: Convert to fraction form
    278,840.79/384,799.57 = 151,516.40/x
  3. Step 3: Cross multiply
    278,840.79x = 384,799.57 × 151,516.40
  4. Step 4: Simplify right side
    278,840.79x = 58,303,443,265.16
  5. Step 5: Solve for x
    x = 58,303,443,265.16/278,840.79
  6. Step 6: Final answer
    x = 209,092.23

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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.