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Finding the Fourth Proportional to 410,003.40, 615,005.10 and 143,790.83

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Solution

The fourth proportional to 410,003.40, 615,005.10 and 143,790.83 is: 215,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,003.40 : 615,005.10 = 143,790.83 : x
  2. Step 2: Convert to fraction form
    410,003.40/615,005.10 = 143,790.83/x
  3. Step 3: Cross multiply
    410,003.40x = 615,005.10 × 143,790.83
  4. Step 4: Simplify right side
    410,003.40x = 88,432,090,708.21
  5. Step 5: Solve for x
    x = 88,432,090,708.21/410,003.40
  6. Step 6: Final answer
    x = 215,686.24

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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.