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Finding the Fourth Proportional to 315,214.65, 434,973.65 and 171,971.55

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Solution

The fourth proportional to 315,214.65, 434,973.65 and 171,971.55 is: 237,308.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,214.65 : 434,973.65 = 171,971.55 : x
  2. Step 2: Convert to fraction form
    315,214.65/434,973.65 = 171,971.55/x
  3. Step 3: Cross multiply
    315,214.65x = 434,973.65 × 171,971.55
  4. Step 4: Simplify right side
    315,214.65x = 74,803,091,939.80
  5. Step 5: Solve for x
    x = 74,803,091,939.80/315,214.65
  6. Step 6: Final answer
    x = 237,308.42

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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.