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Finding the Fourth Proportional to 368,680.48, 553,020.45 and 102,440.86

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Solution

The fourth proportional to 368,680.48, 553,020.45 and 102,440.86 is: 153,661.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,680.48 : 553,020.45 = 102,440.86 : x
  2. Step 2: Convert to fraction form
    368,680.48/553,020.45 = 102,440.86/x
  3. Step 3: Cross multiply
    368,680.48x = 553,020.45 × 102,440.86
  4. Step 4: Simplify right side
    368,680.48x = 56,651,890,495.59
  5. Step 5: Solve for x
    x = 56,651,890,495.59/368,680.48
  6. Step 6: Final answer
    x = 153,661.21

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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.