Home / 286,715.78-395,681.28-159,393.50

Finding the Fourth Proportional to 286,715.78, 395,681.28 and 159,393.50

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Solution

The fourth proportional to 286,715.78, 395,681.28 and 159,393.50 is: 219,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,715.78 : 395,681.28 = 159,393.50 : x
  2. Step 2: Convert to fraction form
    286,715.78/395,681.28 = 159,393.50/x
  3. Step 3: Cross multiply
    286,715.78x = 395,681.28 × 159,393.50
  4. Step 4: Simplify right side
    286,715.78x = 63,069,024,103.68
  5. Step 5: Solve for x
    x = 63,069,024,103.68/286,715.78
  6. Step 6: Final answer
    x = 219,970.54

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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.