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Finding the Fourth Proportional to 612,072.60, 918,195.30 and 191,304.60

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Solution

The fourth proportional to 612,072.60, 918,195.30 and 191,304.60 is: 286,983.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,072.60 : 918,195.30 = 191,304.60 : x
  2. Step 2: Convert to fraction form
    612,072.60/918,195.30 = 191,304.60/x
  3. Step 3: Cross multiply
    612,072.60x = 918,195.30 × 191,304.60
  4. Step 4: Simplify right side
    612,072.60x = 175,654,984,588.38
  5. Step 5: Solve for x
    x = 175,654,984,588.38/612,072.60
  6. Step 6: Final answer
    x = 286,983.90

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1.5x scale

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.