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Finding the Fourth Proportional to 288,648.60, 432,982.80 and 88,967.40

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Solution

The fourth proportional to 288,648.60, 432,982.80 and 88,967.40 is: 133,454.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,648.60 : 432,982.80 = 88,967.40 : x
  2. Step 2: Convert to fraction form
    288,648.60/432,982.80 = 88,967.40/x
  3. Step 3: Cross multiply
    288,648.60x = 432,982.80 × 88,967.40
  4. Step 4: Simplify right side
    288,648.60x = 38,521,353,960.72
  5. Step 5: Solve for x
    x = 38,521,353,960.72/288,648.60
  6. Step 6: Final answer
    x = 133,454.15

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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.