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Finding the Fourth Proportional to 277,142.81, 415,678.28 and 87,622.25

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Solution

The fourth proportional to 277,142.81, 415,678.28 and 87,622.25 is: 131,422.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,142.81 : 415,678.28 = 87,622.25 : x
  2. Step 2: Convert to fraction form
    277,142.81/415,678.28 = 87,622.25/x
  3. Step 3: Cross multiply
    277,142.81x = 415,678.28 × 87,622.25
  4. Step 4: Simplify right side
    277,142.81x = 36,422,663,653.23
  5. Step 5: Solve for x
    x = 36,422,663,653.23/277,142.81
  6. Step 6: Final answer
    x = 131,422.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.