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Finding the Fourth Proportional to 375,405.76, 561,799.62 and 307,148.92

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Solution

The fourth proportional to 375,405.76, 561,799.62 and 307,148.92 is: 459,652.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,405.76 : 561,799.62 = 307,148.92 : x
  2. Step 2: Convert to fraction form
    375,405.76/561,799.62 = 307,148.92/x
  3. Step 3: Cross multiply
    375,405.76x = 561,799.62 × 307,148.92
  4. Step 4: Simplify right side
    375,405.76x = 172,556,146,539.41
  5. Step 5: Solve for x
    x = 172,556,146,539.41/375,405.76
  6. Step 6: Final answer
    x = 459,652.37

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1.5x scale

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.