Home / 289,276.40-432,155.46-187,243.28

Finding the Fourth Proportional to 289,276.40, 432,155.46 and 187,243.28

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Solution

The fourth proportional to 289,276.40, 432,155.46 and 187,243.28 is: 279,726.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,276.40 : 432,155.46 = 187,243.28 : x
  2. Step 2: Convert to fraction form
    289,276.40/432,155.46 = 187,243.28/x
  3. Step 3: Cross multiply
    289,276.40x = 432,155.46 × 187,243.28
  4. Step 4: Simplify right side
    289,276.40x = 80,918,205,800.31
  5. Step 5: Solve for x
    x = 80,918,205,800.31/289,276.40
  6. Step 6: Final answer
    x = 279,726.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.