Home / 530,021.88-731,434.05-288,306.54

Finding the Fourth Proportional to 530,021.88, 731,434.05 and 288,306.54

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Solution

The fourth proportional to 530,021.88, 731,434.05 and 288,306.54 is: 397,865.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,021.88 : 731,434.05 = 288,306.54 : x
  2. Step 2: Convert to fraction form
    530,021.88/731,434.05 = 288,306.54/x
  3. Step 3: Cross multiply
    530,021.88x = 731,434.05 × 288,306.54
  4. Step 4: Simplify right side
    530,021.88x = 210,877,220,193.69
  5. Step 5: Solve for x
    x = 210,877,220,193.69/530,021.88
  6. Step 6: Final answer
    x = 397,865.12

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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.