Home / 388,108.72-581,470.50-210,502.44

Finding the Fourth Proportional to 388,108.72, 581,470.50 and 210,502.44

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Solution

The fourth proportional to 388,108.72, 581,470.50 and 210,502.44 is: 315,378.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,108.72 : 581,470.50 = 210,502.44 : x
  2. Step 2: Convert to fraction form
    388,108.72/581,470.50 = 210,502.44/x
  3. Step 3: Cross multiply
    388,108.72x = 581,470.50 × 210,502.44
  4. Step 4: Simplify right side
    388,108.72x = 122,400,959,038.02
  5. Step 5: Solve for x
    x = 122,400,959,038.02/388,108.72
  6. Step 6: Final answer
    x = 315,378.02

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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.