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Finding the Fourth Proportional to 315,398.93, 435,235.32 and 179,420.08

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Solution

The fourth proportional to 315,398.93, 435,235.32 and 179,420.08 is: 247,591.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,398.93 : 435,235.32 = 179,420.08 : x
  2. Step 2: Convert to fraction form
    315,398.93/435,235.32 = 179,420.08/x
  3. Step 3: Cross multiply
    315,398.93x = 435,235.32 × 179,420.08
  4. Step 4: Simplify right side
    315,398.93x = 78,089,955,036.13
  5. Step 5: Solve for x
    x = 78,089,955,036.13/315,398.93
  6. Step 6: Final answer
    x = 247,591.06

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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.