Home / 385,430.04-531,908.37-215,660.52

Finding the Fourth Proportional to 385,430.04, 531,908.37 and 215,660.52

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Solution

The fourth proportional to 385,430.04, 531,908.37 and 215,660.52 is: 297,619.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,430.04 : 531,908.37 = 215,660.52 : x
  2. Step 2: Convert to fraction form
    385,430.04/531,908.37 = 215,660.52/x
  3. Step 3: Cross multiply
    385,430.04x = 531,908.37 × 215,660.52
  4. Step 4: Simplify right side
    385,430.04x = 114,711,635,666.55
  5. Step 5: Solve for x
    x = 114,711,635,666.55/385,430.04
  6. Step 6: Final answer
    x = 297,619.86

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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.