Home / 278,688.68-384,591.48-151,366.40

Finding the Fourth Proportional to 278,688.68, 384,591.48 and 151,366.40

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Solution

The fourth proportional to 278,688.68, 384,591.48 and 151,366.40 is: 208,886.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,688.68 : 384,591.48 = 151,366.40 : x
  2. Step 2: Convert to fraction form
    278,688.68/384,591.48 = 151,366.40/x
  3. Step 3: Cross multiply
    278,688.68x = 384,591.48 × 151,366.40
  4. Step 4: Simplify right side
    278,688.68x = 58,214,227,798.27
  5. Step 5: Solve for x
    x = 58,214,227,798.27/278,688.68
  6. Step 6: Final answer
    x = 208,886.23

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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.