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Finding the Fourth Proportional to 553,328.40, 829,992.60 and 198,370.20

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Solution

The fourth proportional to 553,328.40, 829,992.60 and 198,370.20 is: 297,555.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,328.40 : 829,992.60 = 198,370.20 : x
  2. Step 2: Convert to fraction form
    553,328.40/829,992.60 = 198,370.20/x
  3. Step 3: Cross multiply
    553,328.40x = 829,992.60 × 198,370.20
  4. Step 4: Simplify right side
    553,328.40x = 164,645,798,060.52
  5. Step 5: Solve for x
    x = 164,645,798,060.52/553,328.40
  6. Step 6: Final answer
    x = 297,555.30

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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.