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Finding the Fourth Proportional to 421,441.53, 631,396.71 and 243,572.82

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Solution

The fourth proportional to 421,441.53, 631,396.71 and 243,572.82 is: 364,916.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,441.53 : 631,396.71 = 243,572.82 : x
  2. Step 2: Convert to fraction form
    421,441.53/631,396.71 = 243,572.82/x
  3. Step 3: Cross multiply
    421,441.53x = 631,396.71 × 243,572.82
  4. Step 4: Simplify right side
    421,441.53x = 153,791,077,193.42
  5. Step 5: Solve for x
    x = 153,791,077,193.42/421,441.53
  6. Step 6: Final answer
    x = 364,916.76

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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.