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Finding the Fourth Proportional to 253,617.55, 349,987.94 and 140,437.87

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Solution

The fourth proportional to 253,617.55, 349,987.94 and 140,437.87 is: 193,801.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,617.55 : 349,987.94 = 140,437.87 : x
  2. Step 2: Convert to fraction form
    253,617.55/349,987.94 = 140,437.87/x
  3. Step 3: Cross multiply
    253,617.55x = 349,987.94 × 140,437.87
  4. Step 4: Simplify right side
    253,617.55x = 49,151,559,768.77
  5. Step 5: Solve for x
    x = 49,151,559,768.77/253,617.55
  6. Step 6: Final answer
    x = 193,801.89

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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.