Home / 292,121.10-438,118.47-92,457.72

Finding the Fourth Proportional to 292,121.10, 438,118.47 and 92,457.72

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Solution

The fourth proportional to 292,121.10, 438,118.47 and 92,457.72 is: 138,666.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,121.10 : 438,118.47 = 92,457.72 : x
  2. Step 2: Convert to fraction form
    292,121.10/438,118.47 = 92,457.72/x
  3. Step 3: Cross multiply
    292,121.10x = 438,118.47 × 92,457.72
  4. Step 4: Simplify right side
    292,121.10x = 40,507,434,826.09
  5. Step 5: Solve for x
    x = 40,507,434,826.09/292,121.10
  6. Step 6: Final answer
    x = 138,666.58

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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.