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Finding the Fourth Proportional to 255,656.70, 352,832.49 and 153,715.37

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Solution

The fourth proportional to 255,656.70, 352,832.49 and 153,715.37 is: 212,142.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,656.70 : 352,832.49 = 153,715.37 : x
  2. Step 2: Convert to fraction form
    255,656.70/352,832.49 = 153,715.37/x
  3. Step 3: Cross multiply
    255,656.70x = 352,832.49 × 153,715.37
  4. Step 4: Simplify right side
    255,656.70x = 54,235,774,984.21
  5. Step 5: Solve for x
    x = 54,235,774,984.21/255,656.70
  6. Step 6: Final answer
    x = 212,142.98

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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.