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Finding the Fourth Proportional to 315,586.14, 435,510.46 and 172,346.18

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Solution

The fourth proportional to 315,586.14, 435,510.46 and 172,346.18 is: 237,838.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,586.14 : 435,510.46 = 172,346.18 : x
  2. Step 2: Convert to fraction form
    315,586.14/435,510.46 = 172,346.18/x
  3. Step 3: Cross multiply
    315,586.14x = 435,510.46 × 172,346.18
  4. Step 4: Simplify right side
    315,586.14x = 75,058,562,168.92
  5. Step 5: Solve for x
    x = 75,058,562,168.92/315,586.14
  6. Step 6: Final answer
    x = 237,838.59

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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.