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Finding the Fourth Proportional to 315,148.87, 434,762.43 and 185,999.72

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Solution

The fourth proportional to 315,148.87, 434,762.43 and 185,999.72 is: 256,595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,148.87 : 434,762.43 = 185,999.72 : x
  2. Step 2: Convert to fraction form
    315,148.87/434,762.43 = 185,999.72/x
  3. Step 3: Cross multiply
    315,148.87x = 434,762.43 × 185,999.72
  4. Step 4: Simplify right side
    315,148.87x = 80,865,690,246.52
  5. Step 5: Solve for x
    x = 80,865,690,246.52/315,148.87
  6. Step 6: Final answer
    x = 256,595.21

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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.