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Finding the Fourth Proportional to 319,510.48, 440,609.52 and 247,864.32

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Solution

The fourth proportional to 319,510.48, 440,609.52 and 247,864.32 is: 341,808.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,510.48 : 440,609.52 = 247,864.32 : x
  2. Step 2: Convert to fraction form
    319,510.48/440,609.52 = 247,864.32/x
  3. Step 3: Cross multiply
    319,510.48x = 440,609.52 × 247,864.32
  4. Step 4: Simplify right side
    319,510.48x = 109,211,379,060.33
  5. Step 5: Solve for x
    x = 109,211,379,060.33/319,510.48
  6. Step 6: Final answer
    x = 341,808.44

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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.