Home / 385,320.51-531,741.54-215,554.64

Finding the Fourth Proportional to 385,320.51, 531,741.54 and 215,554.64

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Solution

The fourth proportional to 385,320.51, 531,741.54 and 215,554.64 is: 297,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,320.51 : 531,741.54 = 215,554.64 : x
  2. Step 2: Convert to fraction form
    385,320.51/531,741.54 = 215,554.64/x
  3. Step 3: Cross multiply
    385,320.51x = 531,741.54 × 215,554.64
  4. Step 4: Simplify right side
    385,320.51x = 114,619,353,569.04
  5. Step 5: Solve for x
    x = 114,619,353,569.04/385,320.51
  6. Step 6: Final answer
    x = 297,464.97

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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.