Home / 211,439.40-317,160.15-53,667.90

Finding the Fourth Proportional to 211,439.40, 317,160.15 and 53,667.90

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Solution

The fourth proportional to 211,439.40, 317,160.15 and 53,667.90 is: 80,502.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,439.40 : 317,160.15 = 53,667.90 : x
  2. Step 2: Convert to fraction form
    211,439.40/317,160.15 = 53,667.90/x
  3. Step 3: Cross multiply
    211,439.40x = 317,160.15 × 53,667.90
  4. Step 4: Simplify right side
    211,439.40x = 17,021,319,214.19
  5. Step 5: Solve for x
    x = 17,021,319,214.19/211,439.40
  6. Step 6: Final answer
    x = 80,502.12

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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.