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Finding the Fourth Proportional to 253,478.46, 349,800.71 and 138,757.17

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Solution

The fourth proportional to 253,478.46, 349,800.71 and 138,757.17 is: 191,485.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,478.46 : 349,800.71 = 138,757.17 : x
  2. Step 2: Convert to fraction form
    253,478.46/349,800.71 = 138,757.17/x
  3. Step 3: Cross multiply
    253,478.46x = 349,800.71 × 138,757.17
  4. Step 4: Simplify right side
    253,478.46x = 48,537,355,429.06
  5. Step 5: Solve for x
    x = 48,537,355,429.06/253,478.46
  6. Step 6: Final answer
    x = 191,485.13

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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.