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Finding the Fourth Proportional to 354,646.60, 531,969.90 and 130,006.60

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Solution

The fourth proportional to 354,646.60, 531,969.90 and 130,006.60 is: 195,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,646.60 : 531,969.90 = 130,006.60 : x
  2. Step 2: Convert to fraction form
    354,646.60/531,969.90 = 130,006.60/x
  3. Step 3: Cross multiply
    354,646.60x = 531,969.90 × 130,006.60
  4. Step 4: Simplify right side
    354,646.60x = 69,159,598,001.34
  5. Step 5: Solve for x
    x = 69,159,598,001.34/354,646.60
  6. Step 6: Final answer
    x = 195,009.90

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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.