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Finding the Fourth Proportional to 420,730.40, 630,901.20 and 183,951.20

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Solution

The fourth proportional to 420,730.40, 630,901.20 and 183,951.20 is: 275,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,730.40 : 630,901.20 = 183,951.20 : x
  2. Step 2: Convert to fraction form
    420,730.40/630,901.20 = 183,951.20/x
  3. Step 3: Cross multiply
    420,730.40x = 630,901.20 × 183,951.20
  4. Step 4: Simplify right side
    420,730.40x = 116,055,032,821.44
  5. Step 5: Solve for x
    x = 116,055,032,821.44/420,730.40
  6. Step 6: Final answer
    x = 275,841.80

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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.