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Finding the Fourth Proportional to 570,505.08, 855,291.06 and 215,316.84

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Solution

The fourth proportional to 570,505.08, 855,291.06 and 215,316.84 is: 322,799.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,505.08 : 855,291.06 = 215,316.84 : x
  2. Step 2: Convert to fraction form
    570,505.08/855,291.06 = 215,316.84/x
  3. Step 3: Cross multiply
    570,505.08x = 855,291.06 × 215,316.84
  4. Step 4: Simplify right side
    570,505.08x = 184,158,568,319.45
  5. Step 5: Solve for x
    x = 184,158,568,319.45/570,505.08
  6. Step 6: Final answer
    x = 322,799.17

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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.