Home / 292,000.32-438,000.89-81,638.06

Finding the Fourth Proportional to 292,000.32, 438,000.89 and 81,638.06

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Solution

The fourth proportional to 292,000.32, 438,000.89 and 81,638.06 is: 122,457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,000.32 : 438,000.89 = 81,638.06 : x
  2. Step 2: Convert to fraction form
    292,000.32/438,000.89 = 81,638.06/x
  3. Step 3: Cross multiply
    292,000.32x = 438,000.89 × 81,638.06
  4. Step 4: Simplify right side
    292,000.32x = 35,757,540,339.68
  5. Step 5: Solve for x
    x = 35,757,540,339.68/292,000.32
  6. Step 6: Final answer
    x = 122,457.20

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1.5x scale

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.