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Finding the Fourth Proportional to 288,317.88, 432,488.64 and 98,908.52

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Solution

The fourth proportional to 288,317.88, 432,488.64 and 98,908.52 is: 148,366.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,317.88 : 432,488.64 = 98,908.52 : x
  2. Step 2: Convert to fraction form
    288,317.88/432,488.64 = 98,908.52/x
  3. Step 3: Cross multiply
    288,317.88x = 432,488.64 × 98,908.52
  4. Step 4: Simplify right side
    288,317.88x = 42,776,811,299.21
  5. Step 5: Solve for x
    x = 42,776,811,299.21/288,317.88
  6. Step 6: Final answer
    x = 148,366.83

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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.