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Finding the Fourth Proportional to 231,437.40, 319,243.94 and 152,855.84

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Solution

The fourth proportional to 231,437.40, 319,243.94 and 152,855.84 is: 210,848.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,437.40 : 319,243.94 = 152,855.84 : x
  2. Step 2: Convert to fraction form
    231,437.40/319,243.94 = 152,855.84/x
  3. Step 3: Cross multiply
    231,437.40x = 319,243.94 × 152,855.84
  4. Step 4: Simplify right side
    231,437.40x = 48,798,300,613.61
  5. Step 5: Solve for x
    x = 48,798,300,613.61/231,437.40
  6. Step 6: Final answer
    x = 210,848.81

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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.