Home / 457,319.80-685,979.70-141,808.60

Finding the Fourth Proportional to 457,319.80, 685,979.70 and 141,808.60

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Solution

The fourth proportional to 457,319.80, 685,979.70 and 141,808.60 is: 212,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,319.80 : 685,979.70 = 141,808.60 : x
  2. Step 2: Convert to fraction form
    457,319.80/685,979.70 = 141,808.60/x
  3. Step 3: Cross multiply
    457,319.80x = 685,979.70 × 141,808.60
  4. Step 4: Simplify right side
    457,319.80x = 97,277,820,885.42
  5. Step 5: Solve for x
    x = 97,277,820,885.42/457,319.80
  6. Step 6: Final answer
    x = 212,712.90

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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.