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Finding the Fourth Proportional to 257,778.94, 386,653.02 and 153,263.02

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Solution

The fourth proportional to 257,778.94, 386,653.02 and 153,263.02 is: 229,885.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,778.94 : 386,653.02 = 153,263.02 : x
  2. Step 2: Convert to fraction form
    257,778.94/386,653.02 = 153,263.02/x
  3. Step 3: Cross multiply
    257,778.94x = 386,653.02 × 153,263.02
  4. Step 4: Simplify right side
    257,778.94x = 59,259,609,537.32
  5. Step 5: Solve for x
    x = 59,259,609,537.32/257,778.94
  6. Step 6: Final answer
    x = 229,885.38

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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.