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Finding the Fourth Proportional to 315,326.50, 435,159.80 and 172,095.73

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Solution

The fourth proportional to 315,326.50, 435,159.80 and 172,095.73 is: 237,497.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,326.50 : 435,159.80 = 172,095.73 : x
  2. Step 2: Convert to fraction form
    315,326.50/435,159.80 = 172,095.73/x
  3. Step 3: Cross multiply
    315,326.50x = 435,159.80 × 172,095.73
  4. Step 4: Simplify right side
    315,326.50x = 74,889,143,447.65
  5. Step 5: Solve for x
    x = 74,889,143,447.65/315,326.50
  6. Step 6: Final answer
    x = 237,497.14

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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.