Home / 389,429.90-537,412.96-219,664.02

Finding the Fourth Proportional to 389,429.90, 537,412.96 and 219,664.02

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Solution

The fourth proportional to 389,429.90, 537,412.96 and 219,664.02 is: 303,136.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,429.90 : 537,412.96 = 219,664.02 : x
  2. Step 2: Convert to fraction form
    389,429.90/537,412.96 = 219,664.02/x
  3. Step 3: Cross multiply
    389,429.90x = 537,412.96 × 219,664.02
  4. Step 4: Simplify right side
    389,429.90x = 118,050,291,193.70
  5. Step 5: Solve for x
    x = 118,050,291,193.70/389,429.90
  6. Step 6: Final answer
    x = 303,136.18

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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.