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Finding the Fourth Proportional to 253,141.32, 349,342.08 and 139,968.12

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Solution

The fourth proportional to 253,141.32, 349,342.08 and 139,968.12 is: 193,159.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,141.32 : 349,342.08 = 139,968.12 : x
  2. Step 2: Convert to fraction form
    253,141.32/349,342.08 = 139,968.12/x
  3. Step 3: Cross multiply
    253,141.32x = 349,342.08 × 139,968.12
  4. Step 4: Simplify right side
    253,141.32x = 48,896,754,174.49
  5. Step 5: Solve for x
    x = 48,896,754,174.49/253,141.32
  6. Step 6: Final answer
    x = 193,159.91

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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.