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Finding the Fourth Proportional to 316,811, 437,091.54 and 180,747.20

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Solution

The fourth proportional to 316,811, 437,091.54 and 180,747.20 is: 249,369.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,811 : 437,091.54 = 180,747.20 : x
  2. Step 2: Convert to fraction form
    316,811/437,091.54 = 180,747.20/x
  3. Step 3: Cross multiply
    316,811x = 437,091.54 × 180,747.20
  4. Step 4: Simplify right side
    316,811x = 79,003,071,998.69
  5. Step 5: Solve for x
    x = 79,003,071,998.69/316,811
  6. Step 6: Final answer
    x = 249,369.73

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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.