Home / 530,263.72-731,749.21-288,540.69

Finding the Fourth Proportional to 530,263.72, 731,749.21 and 288,540.69

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Solution

The fourth proportional to 530,263.72, 731,749.21 and 288,540.69 is: 398,178.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,263.72 : 731,749.21 = 288,540.69 : x
  2. Step 2: Convert to fraction form
    530,263.72/731,749.21 = 288,540.69/x
  3. Step 3: Cross multiply
    530,263.72x = 731,749.21 × 288,540.69
  4. Step 4: Simplify right side
    530,263.72x = 211,139,421,960.36
  5. Step 5: Solve for x
    x = 211,139,421,960.36/530,263.72
  6. Step 6: Final answer
    x = 398,178.14

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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.