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Finding the Fourth Proportional to 515,448.16, 711,318.24 and 300,546.72

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Solution

The fourth proportional to 515,448.16, 711,318.24 and 300,546.72 is: 414,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,448.16 : 711,318.24 = 300,546.72 : x
  2. Step 2: Convert to fraction form
    515,448.16/711,318.24 = 300,546.72/x
  3. Step 3: Cross multiply
    515,448.16x = 711,318.24 × 300,546.72
  4. Step 4: Simplify right side
    515,448.16x = 213,784,363,908.17
  5. Step 5: Solve for x
    x = 213,784,363,908.17/515,448.16
  6. Step 6: Final answer
    x = 414,754.35

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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.