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Finding the Fourth Proportional to 153,445.75, 211,697.79 and 153,209.17

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Solution

The fourth proportional to 153,445.75, 211,697.79 and 153,209.17 is: 211,371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,445.75 : 211,697.79 = 153,209.17 : x
  2. Step 2: Convert to fraction form
    153,445.75/211,697.79 = 153,209.17/x
  3. Step 3: Cross multiply
    153,445.75x = 211,697.79 × 153,209.17
  4. Step 4: Simplify right side
    153,445.75x = 32,434,042,696.73
  5. Step 5: Solve for x
    x = 32,434,042,696.73/153,445.75
  6. Step 6: Final answer
    x = 211,371.40

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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.