Home / 381,128.32-525,953.50-209,042.76

Finding the Fourth Proportional to 381,128.32, 525,953.50 and 209,042.76

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Solution

The fourth proportional to 381,128.32, 525,953.50 and 209,042.76 is: 288,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,128.32 : 525,953.50 = 209,042.76 : x
  2. Step 2: Convert to fraction form
    381,128.32/525,953.50 = 209,042.76/x
  3. Step 3: Cross multiply
    381,128.32x = 525,953.50 × 209,042.76
  4. Step 4: Simplify right side
    381,128.32x = 109,946,771,271.66
  5. Step 5: Solve for x
    x = 109,946,771,271.66/381,128.32
  6. Step 6: Final answer
    x = 288,477.04

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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.