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Finding the Fourth Proportional to 305,225.84, 421,210.32 and 171,089.84

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Solution

The fourth proportional to 305,225.84, 421,210.32 and 171,089.84 is: 236,103.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,225.84 : 421,210.32 = 171,089.84 : x
  2. Step 2: Convert to fraction form
    305,225.84/421,210.32 = 171,089.84/x
  3. Step 3: Cross multiply
    305,225.84x = 421,210.32 × 171,089.84
  4. Step 4: Simplify right side
    305,225.84x = 72,064,806,255.15
  5. Step 5: Solve for x
    x = 72,064,806,255.15/305,225.84
  6. Step 6: Final answer
    x = 236,103.23

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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.