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Finding the Fourth Proportional to 355,580.60, 533,111.70 and 145,110.20

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Solution

The fourth proportional to 355,580.60, 533,111.70 and 145,110.20 is: 217,559.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,580.60 : 533,111.70 = 145,110.20 : x
  2. Step 2: Convert to fraction form
    355,580.60/533,111.70 = 145,110.20/x
  3. Step 3: Cross multiply
    355,580.60x = 533,111.70 × 145,110.20
  4. Step 4: Simplify right side
    355,580.60x = 77,359,945,409.34
  5. Step 5: Solve for x
    x = 77,359,945,409.34/355,580.60
  6. Step 6: Final answer
    x = 217,559.52

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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.