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Finding the Fourth Proportional to 315,324.47, 435,157.95 and 179,354.93

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Solution

The fourth proportional to 315,324.47, 435,157.95 and 179,354.93 is: 247,515.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,324.47 : 435,157.95 = 179,354.93 : x
  2. Step 2: Convert to fraction form
    315,324.47/435,157.95 = 179,354.93/x
  3. Step 3: Cross multiply
    315,324.47x = 435,157.95 × 179,354.93
  4. Step 4: Simplify right side
    315,324.47x = 78,047,721,485.40
  5. Step 5: Solve for x
    x = 78,047,721,485.40/315,324.47
  6. Step 6: Final answer
    x = 247,515.59

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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.