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Finding the Fourth Proportional to 253,187.90, 349,442.27 and 145,820.09

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Solution

The fourth proportional to 253,187.90, 349,442.27 and 145,820.09 is: 201,256.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,187.90 : 349,442.27 = 145,820.09 : x
  2. Step 2: Convert to fraction form
    253,187.90/349,442.27 = 145,820.09/x
  3. Step 3: Cross multiply
    253,187.90x = 349,442.27 × 145,820.09
  4. Step 4: Simplify right side
    253,187.90x = 50,955,703,405.71
  5. Step 5: Solve for x
    x = 50,955,703,405.71/253,187.90
  6. Step 6: Final answer
    x = 201,256.47

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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.