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Finding the Fourth Proportional to 280,496.79, 387,113.60 and 167,319.54

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Solution

The fourth proportional to 280,496.79, 387,113.60 and 167,319.54 is: 230,917.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,496.79 : 387,113.60 = 167,319.54 : x
  2. Step 2: Convert to fraction form
    280,496.79/387,113.60 = 167,319.54/x
  3. Step 3: Cross multiply
    280,496.79x = 387,113.60 × 167,319.54
  4. Step 4: Simplify right side
    280,496.79x = 64,771,669,898.04
  5. Step 5: Solve for x
    x = 64,771,669,898.04/280,496.79
  6. Step 6: Final answer
    x = 230,917.69

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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.