Home / 321,319.60-443,421.09-178,088.89

Finding the Fourth Proportional to 321,319.60, 443,421.09 and 178,088.89

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Solution

The fourth proportional to 321,319.60, 443,421.09 and 178,088.89 is: 245,762.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,319.60 : 443,421.09 = 178,088.89 : x
  2. Step 2: Convert to fraction form
    321,319.60/443,421.09 = 178,088.89/x
  3. Step 3: Cross multiply
    321,319.60x = 443,421.09 × 178,088.89
  4. Step 4: Simplify right side
    321,319.60x = 78,968,369,720.69
  5. Step 5: Solve for x
    x = 78,968,369,720.69/321,319.60
  6. Step 6: Final answer
    x = 245,762.69

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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.