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Finding the Fourth Proportional to 316,682.88, 474,980.16 and 80,011.20

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Solution

The fourth proportional to 316,682.88, 474,980.16 and 80,011.20 is: 120,005.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,682.88 : 474,980.16 = 80,011.20 : x
  2. Step 2: Convert to fraction form
    316,682.88/474,980.16 = 80,011.20/x
  3. Step 3: Cross multiply
    316,682.88x = 474,980.16 × 80,011.20
  4. Step 4: Simplify right side
    316,682.88x = 38,003,732,577.79
  5. Step 5: Solve for x
    x = 38,003,732,577.79/316,682.88
  6. Step 6: Final answer
    x = 120,005.64

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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.