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Finding the Fourth Proportional to 421,359.90, 581,527.71 and 237,633.45

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Solution

The fourth proportional to 421,359.90, 581,527.71 and 237,633.45 is: 327,962.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,359.90 : 581,527.71 = 237,633.45 : x
  2. Step 2: Convert to fraction form
    421,359.90/581,527.71 = 237,633.45/x
  3. Step 3: Cross multiply
    421,359.90x = 581,527.71 × 237,633.45
  4. Step 4: Simplify right side
    421,359.90x = 138,190,435,997.90
  5. Step 5: Solve for x
    x = 138,190,435,997.90/421,359.90
  6. Step 6: Final answer
    x = 327,962.95

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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.