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Finding the Fourth Proportional to 570,054.72, 855,056.64 and 149,321.28

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Solution

The fourth proportional to 570,054.72, 855,056.64 and 149,321.28 is: 223,975.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,054.72 : 855,056.64 = 149,321.28 : x
  2. Step 2: Convert to fraction form
    570,054.72/855,056.64 = 149,321.28/x
  3. Step 3: Cross multiply
    570,054.72x = 855,056.64 × 149,321.28
  4. Step 4: Simplify right side
    570,054.72x = 127,678,151,957.30
  5. Step 5: Solve for x
    x = 127,678,151,957.30/570,054.72
  6. Step 6: Final answer
    x = 223,975.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.