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Finding the Fourth Proportional to 508,238.72, 701,358.72 and 281,879.36

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Solution

The fourth proportional to 508,238.72, 701,358.72 and 281,879.36 is: 388,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,238.72 : 701,358.72 = 281,879.36 : x
  2. Step 2: Convert to fraction form
    508,238.72/701,358.72 = 281,879.36/x
  3. Step 3: Cross multiply
    508,238.72x = 701,358.72 × 281,879.36
  4. Step 4: Simplify right side
    508,238.72x = 197,698,547,124.02
  5. Step 5: Solve for x
    x = 197,698,547,124.02/508,238.72
  6. Step 6: Final answer
    x = 388,987.57

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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.