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Finding the Fourth Proportional to 278,551.81, 384,402.16 and 151,224.67

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Solution

The fourth proportional to 278,551.81, 384,402.16 and 151,224.67 is: 208,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,551.81 : 384,402.16 = 151,224.67 : x
  2. Step 2: Convert to fraction form
    278,551.81/384,402.16 = 151,224.67/x
  3. Step 3: Cross multiply
    278,551.81x = 384,402.16 × 151,224.67
  4. Step 4: Simplify right side
    278,551.81x = 58,131,089,612.18
  5. Step 5: Solve for x
    x = 58,131,089,612.18/278,551.81
  6. Step 6: Final answer
    x = 208,690.40

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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.