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Finding the Fourth Proportional to 875,101.60, 1,312,490.40 and 243,884.80

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Solution

The fourth proportional to 875,101.60, 1,312,490.40 and 243,884.80 is: 365,782.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,101.60 : 1,312,490.40 = 243,884.80 : x
  2. Step 2: Convert to fraction form
    875,101.60/1,312,490.40 = 243,884.80/x
  3. Step 3: Cross multiply
    875,101.60x = 1,312,490.40 × 243,884.80
  4. Step 4: Simplify right side
    875,101.60x = 320,096,458,705.92
  5. Step 5: Solve for x
    x = 320,096,458,705.92/875,101.60
  6. Step 6: Final answer
    x = 365,782.05

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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.