Home / 389,127.60-536,988.88-219,361.84

Finding the Fourth Proportional to 389,127.60, 536,988.88 and 219,361.84

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Solution

The fourth proportional to 389,127.60, 536,988.88 and 219,361.84 is: 302,715.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,127.60 : 536,988.88 = 219,361.84 : x
  2. Step 2: Convert to fraction form
    389,127.60/536,988.88 = 219,361.84/x
  3. Step 3: Cross multiply
    389,127.60x = 536,988.88 × 219,361.84
  4. Step 4: Simplify right side
    389,127.60x = 117,794,868,776.34
  5. Step 5: Solve for x
    x = 117,794,868,776.34/389,127.60
  6. Step 6: Final answer
    x = 302,715.28

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1.5x scale

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.