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Finding the Fourth Proportional to 448,808.48, 619,382.40 and 257,816.96

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Solution

The fourth proportional to 448,808.48, 619,382.40 and 257,816.96 is: 355,802.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,808.48 : 619,382.40 = 257,816.96 : x
  2. Step 2: Convert to fraction form
    448,808.48/619,382.40 = 257,816.96/x
  3. Step 3: Cross multiply
    448,808.48x = 619,382.40 × 257,816.96
  4. Step 4: Simplify right side
    448,808.48x = 159,687,287,445.50
  5. Step 5: Solve for x
    x = 159,687,287,445.50/448,808.48
  6. Step 6: Final answer
    x = 355,802.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.