Home / 448,149.51-618,408.27-257,158.80

Finding the Fourth Proportional to 448,149.51, 618,408.27 and 257,158.80

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Solution

The fourth proportional to 448,149.51, 618,408.27 and 257,158.80 is: 354,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,149.51 : 618,408.27 = 257,158.80 : x
  2. Step 2: Convert to fraction form
    448,149.51/618,408.27 = 257,158.80/x
  3. Step 3: Cross multiply
    448,149.51x = 618,408.27 × 257,158.80
  4. Step 4: Simplify right side
    448,149.51x = 159,029,128,623.28
  5. Step 5: Solve for x
    x = 159,029,128,623.28/448,149.51
  6. Step 6: Final answer
    x = 354,857.31

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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.