Home / 384,783.48-531,000.36-215,017.61

Finding the Fourth Proportional to 384,783.48, 531,000.36 and 215,017.61

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Solution

The fourth proportional to 384,783.48, 531,000.36 and 215,017.61 is: 296,723.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,783.48 : 531,000.36 = 215,017.61 : x
  2. Step 2: Convert to fraction form
    384,783.48/531,000.36 = 215,017.61/x
  3. Step 3: Cross multiply
    384,783.48x = 531,000.36 × 215,017.61
  4. Step 4: Simplify right side
    384,783.48x = 114,174,425,661.34
  5. Step 5: Solve for x
    x = 114,174,425,661.34/384,783.48
  6. Step 6: Final answer
    x = 296,723.82

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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.