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Finding the Fourth Proportional to 315,641.69, 435,607.78 and 179,675.70

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Solution

The fourth proportional to 315,641.69, 435,607.78 and 179,675.70 is: 247,965.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,641.69 : 435,607.78 = 179,675.70 : x
  2. Step 2: Convert to fraction form
    315,641.69/435,607.78 = 179,675.70/x
  3. Step 3: Cross multiply
    315,641.69x = 435,607.78 × 179,675.70
  4. Step 4: Simplify right side
    315,641.69x = 78,268,132,796.95
  5. Step 5: Solve for x
    x = 78,268,132,796.95/315,641.69
  6. Step 6: Final answer
    x = 247,965.13

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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.