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Finding the Fourth Proportional to 306,590.32, 423,114.54 and 170,623.87

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Solution

The fourth proportional to 306,590.32, 423,114.54 and 170,623.87 is: 235,472.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,590.32 : 423,114.54 = 170,623.87 : x
  2. Step 2: Convert to fraction form
    306,590.32/423,114.54 = 170,623.87/x
  3. Step 3: Cross multiply
    306,590.32x = 423,114.54 × 170,623.87
  4. Step 4: Simplify right side
    306,590.32x = 72,193,438,570.44
  5. Step 5: Solve for x
    x = 72,193,438,570.44/306,590.32
  6. Step 6: Final answer
    x = 235,472.01

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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.