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Finding the Fourth Proportional to 570,148.48, 855,192.24 and 215,139.52

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Solution

The fourth proportional to 570,148.48, 855,192.24 and 215,139.52 is: 322,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,148.48 : 855,192.24 = 215,139.52 : x
  2. Step 2: Convert to fraction form
    570,148.48/855,192.24 = 215,139.52/x
  3. Step 3: Cross multiply
    570,148.48x = 855,192.24 × 215,139.52
  4. Step 4: Simplify right side
    570,148.48x = 183,985,648,021.33
  5. Step 5: Solve for x
    x = 183,985,648,021.33/570,148.48
  6. Step 6: Final answer
    x = 322,697.78

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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.