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Finding the Fourth Proportional to 315,292.42, 435,112.80 and 172,061.71

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Solution

The fourth proportional to 315,292.42, 435,112.80 and 172,061.71 is: 237,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,292.42 : 435,112.80 = 172,061.71 : x
  2. Step 2: Convert to fraction form
    315,292.42/435,112.80 = 172,061.71/x
  3. Step 3: Cross multiply
    315,292.42x = 435,112.80 × 172,061.71
  4. Step 4: Simplify right side
    315,292.42x = 74,866,250,677.87
  5. Step 5: Solve for x
    x = 74,866,250,677.87/315,292.42
  6. Step 6: Final answer
    x = 237,450.21

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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.