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Finding the Fourth Proportional to 311,501.70, 429,854.85 and 184,218.30

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Solution

The fourth proportional to 311,501.70, 429,854.85 and 184,218.30 is: 254,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,501.70 : 429,854.85 = 184,218.30 : x
  2. Step 2: Convert to fraction form
    311,501.70/429,854.85 = 184,218.30/x
  3. Step 3: Cross multiply
    311,501.70x = 429,854.85 × 184,218.30
  4. Step 4: Simplify right side
    311,501.70x = 79,187,129,713.76
  5. Step 5: Solve for x
    x = 79,187,129,713.76/311,501.70
  6. Step 6: Final answer
    x = 254,210.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.