Home / 430,470.05-645,741.11-130,952.90

Finding the Fourth Proportional to 430,470.05, 645,741.11 and 130,952.90

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Solution

The fourth proportional to 430,470.05, 645,741.11 and 130,952.90 is: 196,440.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,470.05 : 645,741.11 = 130,952.90 : x
  2. Step 2: Convert to fraction form
    430,470.05/645,741.11 = 130,952.90/x
  3. Step 3: Cross multiply
    430,470.05x = 645,741.11 × 130,952.90
  4. Step 4: Simplify right side
    430,470.05x = 84,561,672,945.45
  5. Step 5: Solve for x
    x = 84,561,672,945.45/430,470.05
  6. Step 6: Final answer
    x = 196,440.32

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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.