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Finding the Fourth Proportional to 351,457.65, 485,013.87 and 190,312.69

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Solution

The fourth proportional to 351,457.65, 485,013.87 and 190,312.69 is: 262,632.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,457.65 : 485,013.87 = 190,312.69 : x
  2. Step 2: Convert to fraction form
    351,457.65/485,013.87 = 190,312.69/x
  3. Step 3: Cross multiply
    351,457.65x = 485,013.87 × 190,312.69
  4. Step 4: Simplify right side
    351,457.65x = 92,304,294,287.01
  5. Step 5: Solve for x
    x = 92,304,294,287.01/351,457.65
  6. Step 6: Final answer
    x = 262,632.76

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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.