Home / 530,130.72-731,525.80-315,229.28

Finding the Fourth Proportional to 530,130.72, 731,525.80 and 315,229.28

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Solution

The fourth proportional to 530,130.72, 731,525.80 and 315,229.28 is: 434,983.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,130.72 : 731,525.80 = 315,229.28 : x
  2. Step 2: Convert to fraction form
    530,130.72/731,525.80 = 315,229.28/x
  3. Step 3: Cross multiply
    530,130.72x = 731,525.80 × 315,229.28
  4. Step 4: Simplify right side
    530,130.72x = 230,598,351,235.42
  5. Step 5: Solve for x
    x = 230,598,351,235.42/530,130.72
  6. Step 6: Final answer
    x = 434,983.94

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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.