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Finding the Fourth Proportional to 529,858.80, 731,210.04 and 288,143.67

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Solution

The fourth proportional to 529,858.80, 731,210.04 and 288,143.67 is: 397,640.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,858.80 : 731,210.04 = 288,143.67 : x
  2. Step 2: Convert to fraction form
    529,858.80/731,210.04 = 288,143.67/x
  3. Step 3: Cross multiply
    529,858.80x = 731,210.04 × 288,143.67
  4. Step 4: Simplify right side
    529,858.80x = 210,693,544,466.45
  5. Step 5: Solve for x
    x = 210,693,544,466.45/529,858.80
  6. Step 6: Final answer
    x = 397,640.93

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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.