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Finding the Fourth Proportional to 253,616.64, 349,988.45 and 137,329.58

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Solution

The fourth proportional to 253,616.64, 349,988.45 and 137,329.58 is: 189,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,616.64 : 349,988.45 = 137,329.58 : x
  2. Step 2: Convert to fraction form
    253,616.64/349,988.45 = 137,329.58/x
  3. Step 3: Cross multiply
    253,616.64x = 349,988.45 × 137,329.58
  4. Step 4: Simplify right side
    253,616.64x = 48,063,764,406.76
  5. Step 5: Solve for x
    x = 48,063,764,406.76/253,616.64
  6. Step 6: Final answer
    x = 189,513.45

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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.