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Finding the Fourth Proportional to 288,612.41, 432,982.51 and 99,068.54

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Solution

The fourth proportional to 288,612.41, 432,982.51 and 99,068.54 is: 148,624.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,612.41 : 432,982.51 = 99,068.54 : x
  2. Step 2: Convert to fraction form
    288,612.41/432,982.51 = 99,068.54/x
  3. Step 3: Cross multiply
    288,612.41x = 432,982.51 × 99,068.54
  4. Step 4: Simplify right side
    288,612.41x = 42,894,942,698.65
  5. Step 5: Solve for x
    x = 42,894,942,698.65/288,612.41
  6. Step 6: Final answer
    x = 148,624.74

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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.