Home / 530,269.20-731,779.20-288,558.72

Finding the Fourth Proportional to 530,269.20, 731,779.20 and 288,558.72

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Solution

The fourth proportional to 530,269.20, 731,779.20 and 288,558.72 is: 398,215.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,269.20 : 731,779.20 = 288,558.72 : x
  2. Step 2: Convert to fraction form
    530,269.20/731,779.20 = 288,558.72/x
  3. Step 3: Cross multiply
    530,269.20x = 731,779.20 × 288,558.72
  4. Step 4: Simplify right side
    530,269.20x = 211,161,269,274.62
  5. Step 5: Solve for x
    x = 211,161,269,274.62/530,269.20
  6. Step 6: Final answer
    x = 398,215.23

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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.