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Finding the Fourth Proportional to 448,072.65, 618,345.72 and 257,103.81

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Solution

The fourth proportional to 448,072.65, 618,345.72 and 257,103.81 is: 354,806.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,072.65 : 618,345.72 = 257,103.81 : x
  2. Step 2: Convert to fraction form
    448,072.65/618,345.72 = 257,103.81/x
  3. Step 3: Cross multiply
    448,072.65x = 618,345.72 × 257,103.81
  4. Step 4: Simplify right side
    448,072.65x = 158,979,040,509.19
  5. Step 5: Solve for x
    x = 158,979,040,509.19/448,072.65
  6. Step 6: Final answer
    x = 354,806.39

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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.