Home / 326,926.72-490,381-87,042.68

Finding the Fourth Proportional to 326,926.72, 490,381 and 87,042.68

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Solution

The fourth proportional to 326,926.72, 490,381 and 87,042.68 is: 130,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,926.72 : 490,381 = 87,042.68 : x
  2. Step 2: Convert to fraction form
    326,926.72/490,381 = 87,042.68/x
  3. Step 3: Cross multiply
    326,926.72x = 490,381 × 87,042.68
  4. Step 4: Simplify right side
    326,926.72x = 42,684,076,461.08
  5. Step 5: Solve for x
    x = 42,684,076,461.08/326,926.72
  6. Step 6: Final answer
    x = 130,561.60

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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.