Home / 287,233.20-430,849.80-129,769.20

Finding the Fourth Proportional to 287,233.20, 430,849.80 and 129,769.20

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Solution

The fourth proportional to 287,233.20, 430,849.80 and 129,769.20 is: 194,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,233.20 : 430,849.80 = 129,769.20 : x
  2. Step 2: Convert to fraction form
    287,233.20/430,849.80 = 129,769.20/x
  3. Step 3: Cross multiply
    287,233.20x = 430,849.80 × 129,769.20
  4. Step 4: Simplify right side
    287,233.20x = 55,911,033,866.16
  5. Step 5: Solve for x
    x = 55,911,033,866.16/287,233.20
  6. Step 6: Final answer
    x = 194,653.80

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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.