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Finding the Fourth Proportional to 355,881.60, 533,563.20 and 145,411.20

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Solution

The fourth proportional to 355,881.60, 533,563.20 and 145,411.20 is: 218,010.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,881.60 : 533,563.20 = 145,411.20 : x
  2. Step 2: Convert to fraction form
    355,881.60/533,563.20 = 145,411.20/x
  3. Step 3: Cross multiply
    355,881.60x = 533,563.20 × 145,411.20
  4. Step 4: Simplify right side
    355,881.60x = 77,586,065,187.84
  5. Step 5: Solve for x
    x = 77,586,065,187.84/355,881.60
  6. Step 6: Final answer
    x = 218,010.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.