Home / 430,484.22-645,725.25-205,161.66

Finding the Fourth Proportional to 430,484.22, 645,725.25 and 205,161.66

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Solution

The fourth proportional to 430,484.22, 645,725.25 and 205,161.66 is: 307,741.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,484.22 : 645,725.25 = 205,161.66 : x
  2. Step 2: Convert to fraction form
    430,484.22/645,725.25 = 205,161.66/x
  3. Step 3: Cross multiply
    430,484.22x = 645,725.25 × 205,161.66
  4. Step 4: Simplify right side
    430,484.22x = 132,478,064,193.92
  5. Step 5: Solve for x
    x = 132,478,064,193.92/430,484.22
  6. Step 6: Final answer
    x = 307,741.98

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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.