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Finding the Fourth Proportional to 253,105.28, 349,274.22 and 145,678.76

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Solution

The fourth proportional to 253,105.28, 349,274.22 and 145,678.76 is: 201,030.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,105.28 : 349,274.22 = 145,678.76 : x
  2. Step 2: Convert to fraction form
    253,105.28/349,274.22 = 145,678.76/x
  3. Step 3: Cross multiply
    253,105.28x = 349,274.22 × 145,678.76
  4. Step 4: Simplify right side
    253,105.28x = 50,881,835,269.57
  5. Step 5: Solve for x
    x = 50,881,835,269.57/253,105.28
  6. Step 6: Final answer
    x = 201,030.32

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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.