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Finding the Fourth Proportional to 382,996.80, 574,495.20 and 98,686.80

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Solution

The fourth proportional to 382,996.80, 574,495.20 and 98,686.80 is: 148,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,996.80 : 574,495.20 = 98,686.80 : x
  2. Step 2: Convert to fraction form
    382,996.80/574,495.20 = 98,686.80/x
  3. Step 3: Cross multiply
    382,996.80x = 574,495.20 × 98,686.80
  4. Step 4: Simplify right side
    382,996.80x = 56,695,092,903.36
  5. Step 5: Solve for x
    x = 56,695,092,903.36/382,996.80
  6. Step 6: Final answer
    x = 148,030.20

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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.