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Finding the Fourth Proportional to 211,483.09, 291,854.10 and 115,990.17

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Solution

The fourth proportional to 211,483.09, 291,854.10 and 115,990.17 is: 160,070.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,483.09 : 291,854.10 = 115,990.17 : x
  2. Step 2: Convert to fraction form
    211,483.09/291,854.10 = 115,990.17/x
  3. Step 3: Cross multiply
    211,483.09x = 291,854.10 × 115,990.17
  4. Step 4: Simplify right side
    211,483.09x = 33,852,206,674.20
  5. Step 5: Solve for x
    x = 33,852,206,674.20/211,483.09
  6. Step 6: Final answer
    x = 160,070.51

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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.