Home / 215,939.40-323,909.10-130,318.35

Finding the Fourth Proportional to 215,939.40, 323,909.10 and 130,318.35

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Solution

The fourth proportional to 215,939.40, 323,909.10 and 130,318.35 is: 195,477.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,939.40 : 323,909.10 = 130,318.35 : x
  2. Step 2: Convert to fraction form
    215,939.40/323,909.10 = 130,318.35/x
  3. Step 3: Cross multiply
    215,939.40x = 323,909.10 × 130,318.35
  4. Step 4: Simplify right side
    215,939.40x = 42,211,299,461.99
  5. Step 5: Solve for x
    x = 42,211,299,461.99/215,939.40
  6. Step 6: Final answer
    x = 195,477.53

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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.