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Finding the Fourth Proportional to 404,897.60, 607,346.40 and 272,187.20

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Solution

The fourth proportional to 404,897.60, 607,346.40 and 272,187.20 is: 408,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,897.60 : 607,346.40 = 272,187.20 : x
  2. Step 2: Convert to fraction form
    404,897.60/607,346.40 = 272,187.20/x
  3. Step 3: Cross multiply
    404,897.60x = 607,346.40 × 272,187.20
  4. Step 4: Simplify right side
    404,897.60x = 165,311,916,046.08
  5. Step 5: Solve for x
    x = 165,311,916,046.08/404,897.60
  6. Step 6: Final answer
    x = 408,280.80

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1.5x scale

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.