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Finding the Fourth Proportional to 253,139.32, 349,339.26 and 139,966.12

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Solution

The fourth proportional to 253,139.32, 349,339.26 and 139,966.12 is: 193,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,139.32 : 349,339.26 = 139,966.12 : x
  2. Step 2: Convert to fraction form
    253,139.32/349,339.26 = 139,966.12/x
  3. Step 3: Cross multiply
    253,139.32x = 349,339.26 × 139,966.12
  4. Step 4: Simplify right side
    253,139.32x = 48,895,660,785.87
  5. Step 5: Solve for x
    x = 48,895,660,785.87/253,139.32
  6. Step 6: Final answer
    x = 193,157.12

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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.