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Finding the Fourth Proportional to 315,326.47, 435,160.71 and 179,356.93

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Solution

The fourth proportional to 315,326.47, 435,160.71 and 179,356.93 is: 247,518.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,326.47 : 435,160.71 = 179,356.93 : x
  2. Step 2: Convert to fraction form
    315,326.47/435,160.71 = 179,356.93/x
  3. Step 3: Cross multiply
    315,326.47x = 435,160.71 × 179,356.93
  4. Step 4: Simplify right side
    315,326.47x = 78,049,089,002.22
  5. Step 5: Solve for x
    x = 78,049,089,002.22/315,326.47
  6. Step 6: Final answer
    x = 247,518.35

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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.