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Finding the Fourth Proportional to 288,302.36, 432,494.81 and 88,639.51

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Solution

The fourth proportional to 288,302.36, 432,494.81 and 88,639.51 is: 132,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,302.36 : 432,494.81 = 88,639.51 : x
  2. Step 2: Convert to fraction form
    288,302.36/432,494.81 = 88,639.51/x
  3. Step 3: Cross multiply
    288,302.36x = 432,494.81 × 88,639.51
  4. Step 4: Simplify right side
    288,302.36x = 38,336,128,964.36
  5. Step 5: Solve for x
    x = 38,336,128,964.36/288,302.36
  6. Step 6: Final answer
    x = 132,971.96

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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.