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Finding the Fourth Proportional to 288,051.30, 432,271.35 and 187,967.70

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Solution

The fourth proportional to 288,051.30, 432,271.35 and 187,967.70 is: 282,078.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,051.30 : 432,271.35 = 187,967.70 : x
  2. Step 2: Convert to fraction form
    288,051.30/432,271.35 = 187,967.70/x
  3. Step 3: Cross multiply
    288,051.30x = 432,271.35 × 187,967.70
  4. Step 4: Simplify right side
    288,051.30x = 81,253,051,435.40
  5. Step 5: Solve for x
    x = 81,253,051,435.40/288,051.30
  6. Step 6: Final answer
    x = 282,078.41

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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.