Home / 385,276.06-531,652.08-215,477.38

Finding the Fourth Proportional to 385,276.06, 531,652.08 and 215,477.38

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Solution

The fourth proportional to 385,276.06, 531,652.08 and 215,477.38 is: 297,342.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,276.06 : 531,652.08 = 215,477.38 : x
  2. Step 2: Convert to fraction form
    385,276.06/531,652.08 = 215,477.38/x
  3. Step 3: Cross multiply
    385,276.06x = 531,652.08 × 215,477.38
  4. Step 4: Simplify right side
    385,276.06x = 114,558,997,269.95
  5. Step 5: Solve for x
    x = 114,558,997,269.95/385,276.06
  6. Step 6: Final answer
    x = 297,342.63

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1.5x scale

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.