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Finding the Fourth Proportional to 258,707.52, 356,957.28 and 145,488.96

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Solution

The fourth proportional to 258,707.52, 356,957.28 and 145,488.96 is: 200,741.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,707.52 : 356,957.28 = 145,488.96 : x
  2. Step 2: Convert to fraction form
    258,707.52/356,957.28 = 145,488.96/x
  3. Step 3: Cross multiply
    258,707.52x = 356,957.28 × 145,488.96
  4. Step 4: Simplify right side
    258,707.52x = 51,933,343,431.63
  5. Step 5: Solve for x
    x = 51,933,343,431.63/258,707.52
  6. Step 6: Final answer
    x = 200,741.53

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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.