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Finding the Fourth Proportional to 358,896.80, 538,928.40 and 259,752.80

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Solution

The fourth proportional to 358,896.80, 538,928.40 and 259,752.80 is: 390,051.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,896.80 : 538,928.40 = 259,752.80 : x
  2. Step 2: Convert to fraction form
    358,896.80/538,928.40 = 259,752.80/x
  3. Step 3: Cross multiply
    358,896.80x = 538,928.40 × 259,752.80
  4. Step 4: Simplify right side
    358,896.80x = 139,988,160,899.52
  5. Step 5: Solve for x
    x = 139,988,160,899.52/358,896.80
  6. Step 6: Final answer
    x = 390,051.29

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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.