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Finding the Fourth Proportional to 292,971.65, 439,457.48 and 105,939.41

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Solution

The fourth proportional to 292,971.65, 439,457.48 and 105,939.41 is: 158,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,971.65 : 439,457.48 = 105,939.41 : x
  2. Step 2: Convert to fraction form
    292,971.65/439,457.48 = 105,939.41/x
  3. Step 3: Cross multiply
    292,971.65x = 439,457.48 × 105,939.41
  4. Step 4: Simplify right side
    292,971.65x = 46,555,865,621.59
  5. Step 5: Solve for x
    x = 46,555,865,621.59/292,971.65
  6. Step 6: Final answer
    x = 158,909.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.