Home / 401,318.20-553,997.46-256,314.16

Finding the Fourth Proportional to 401,318.20, 553,997.46 and 256,314.16

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Solution

The fourth proportional to 401,318.20, 553,997.46 and 256,314.16 is: 353,827.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,318.20 : 553,997.46 = 256,314.16 : x
  2. Step 2: Convert to fraction form
    401,318.20/553,997.46 = 256,314.16/x
  3. Step 3: Cross multiply
    401,318.20x = 553,997.46 × 256,314.16
  4. Step 4: Simplify right side
    401,318.20x = 141,997,393,602.03
  5. Step 5: Solve for x
    x = 141,997,393,602.03/401,318.20
  6. Step 6: Final answer
    x = 353,827.45

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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.