Home / 385,242.34-531,624.18-213,155.81

Finding the Fourth Proportional to 385,242.34, 531,624.18 and 213,155.81

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Solution

The fourth proportional to 385,242.34, 531,624.18 and 213,155.81 is: 294,149.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,242.34 : 531,624.18 = 213,155.81 : x
  2. Step 2: Convert to fraction form
    385,242.34/531,624.18 = 213,155.81/x
  3. Step 3: Cross multiply
    385,242.34x = 531,624.18 × 213,155.81
  4. Step 4: Simplify right side
    385,242.34x = 113,318,782,703.49
  5. Step 5: Solve for x
    x = 113,318,782,703.49/385,242.34
  6. Step 6: Final answer
    x = 294,149.35

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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.