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Finding the Fourth Proportional to 368,248.78, 549,684.82 and 315,994.06

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Solution

The fourth proportional to 368,248.78, 549,684.82 and 315,994.06 is: 471,684.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,248.78 : 549,684.82 = 315,994.06 : x
  2. Step 2: Convert to fraction form
    368,248.78/549,684.82 = 315,994.06/x
  3. Step 3: Cross multiply
    368,248.78x = 549,684.82 × 315,994.06
  4. Step 4: Simplify right side
    368,248.78x = 173,697,137,992.17
  5. Step 5: Solve for x
    x = 173,697,137,992.17/368,248.78
  6. Step 6: Final answer
    x = 471,684.22

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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.