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Finding the Fourth Proportional to 203,521.42, 305,328.63 and 70,401.58

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Solution

The fourth proportional to 203,521.42, 305,328.63 and 70,401.58 is: 105,618.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,521.42 : 305,328.63 = 70,401.58 : x
  2. Step 2: Convert to fraction form
    203,521.42/305,328.63 = 70,401.58/x
  3. Step 3: Cross multiply
    203,521.42x = 305,328.63 × 70,401.58
  4. Step 4: Simplify right side
    203,521.42x = 21,495,617,971.24
  5. Step 5: Solve for x
    x = 21,495,617,971.24/203,521.42
  6. Step 6: Final answer
    x = 105,618.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.