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Finding the Fourth Proportional to 258,352.48, 356,530.71 and 142,070.86

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Solution

The fourth proportional to 258,352.48, 356,530.71 and 142,070.86 is: 196,060.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,352.48 : 356,530.71 = 142,070.86 : x
  2. Step 2: Convert to fraction form
    258,352.48/356,530.71 = 142,070.86/x
  3. Step 3: Cross multiply
    258,352.48x = 356,530.71 × 142,070.86
  4. Step 4: Simplify right side
    258,352.48x = 50,652,624,586.11
  5. Step 5: Solve for x
    x = 50,652,624,586.11/258,352.48
  6. Step 6: Final answer
    x = 196,060.14

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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.