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Finding the Fourth Proportional to 368,249.78, 549,686.31 and 315,995.06

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Solution

The fourth proportional to 368,249.78, 549,686.31 and 315,995.06 is: 471,685.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,249.78 : 549,686.31 = 315,995.06 : x
  2. Step 2: Convert to fraction form
    368,249.78/549,686.31 = 315,995.06/x
  3. Step 3: Cross multiply
    368,249.78x = 549,686.31 × 315,995.06
  4. Step 4: Simplify right side
    368,249.78x = 173,698,158,509.63
  5. Step 5: Solve for x
    x = 173,698,158,509.63/368,249.78
  6. Step 6: Final answer
    x = 471,685.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.