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Finding the Fourth Proportional to 302,935.70, 455,387.70 and 259,633.10

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Solution

The fourth proportional to 302,935.70, 455,387.70 and 259,633.10 is: 390,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,935.70 : 455,387.70 = 259,633.10 : x
  2. Step 2: Convert to fraction form
    302,935.70/455,387.70 = 259,633.10/x
  3. Step 3: Cross multiply
    302,935.70x = 455,387.70 × 259,633.10
  4. Step 4: Simplify right side
    302,935.70x = 118,233,720,252.87
  5. Step 5: Solve for x
    x = 118,233,720,252.87/302,935.70
  6. Step 6: Final answer
    x = 390,293.12

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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.