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Finding the Fourth Proportional to 211,502.04, 317,209.32 and 78,379.32

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Solution

The fourth proportional to 211,502.04, 317,209.32 and 78,379.32 is: 117,552.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,502.04 : 317,209.32 = 78,379.32 : x
  2. Step 2: Convert to fraction form
    211,502.04/317,209.32 = 78,379.32/x
  3. Step 3: Cross multiply
    211,502.04x = 317,209.32 × 78,379.32
  4. Step 4: Simplify right side
    211,502.04x = 24,862,650,799.26
  5. Step 5: Solve for x
    x = 24,862,650,799.26/211,502.04
  6. Step 6: Final answer
    x = 117,552.77

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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.