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Finding the Fourth Proportional to 315,852.48, 435,876.59 and 172,612.50

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Solution

The fourth proportional to 315,852.48, 435,876.59 and 172,612.50 is: 238,205.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,852.48 : 435,876.59 = 172,612.50 : x
  2. Step 2: Convert to fraction form
    315,852.48/435,876.59 = 172,612.50/x
  3. Step 3: Cross multiply
    315,852.48x = 435,876.59 × 172,612.50
  4. Step 4: Simplify right side
    315,852.48x = 75,237,747,573.16
  5. Step 5: Solve for x
    x = 75,237,747,573.16/315,852.48
  6. Step 6: Final answer
    x = 238,205.34

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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.