Home / 319,022.08-440,281.49-238,309.47

Finding the Fourth Proportional to 319,022.08, 440,281.49 and 238,309.47

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Solution

The fourth proportional to 319,022.08, 440,281.49 and 238,309.47 is: 328,890.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,022.08 : 440,281.49 = 238,309.47 : x
  2. Step 2: Convert to fraction form
    319,022.08/440,281.49 = 238,309.47/x
  3. Step 3: Cross multiply
    319,022.08x = 440,281.49 × 238,309.47
  4. Step 4: Simplify right side
    319,022.08x = 104,923,248,532.71
  5. Step 5: Solve for x
    x = 104,923,248,532.71/319,022.08
  6. Step 6: Final answer
    x = 328,890.24

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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.