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Finding the Fourth Proportional to 448,843.64, 619,427.92 and 257,869.40

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Solution

The fourth proportional to 448,843.64, 619,427.92 and 257,869.40 is: 355,873.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,843.64 : 619,427.92 = 257,869.40 : x
  2. Step 2: Convert to fraction form
    448,843.64/619,427.92 = 257,869.40/x
  3. Step 3: Cross multiply
    448,843.64x = 619,427.92 × 257,869.40
  4. Step 4: Simplify right side
    448,843.64x = 159,731,506,073.65
  5. Step 5: Solve for x
    x = 159,731,506,073.65/448,843.64
  6. Step 6: Final answer
    x = 355,873.39

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1.5x scale

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.