Home / 529,931.64-731,309.11-288,215.97

Finding the Fourth Proportional to 529,931.64, 731,309.11 and 288,215.97

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Solution

The fourth proportional to 529,931.64, 731,309.11 and 288,215.97 is: 397,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,931.64 : 731,309.11 = 288,215.97 : x
  2. Step 2: Convert to fraction form
    529,931.64/731,309.11 = 288,215.97/x
  3. Step 3: Cross multiply
    529,931.64x = 731,309.11 × 288,215.97
  4. Step 4: Simplify right side
    529,931.64x = 210,774,961,045.54
  5. Step 5: Solve for x
    x = 210,774,961,045.54/529,931.64
  6. Step 6: Final answer
    x = 397,739.90

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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.