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Finding the Fourth Proportional to 440,145, 607,407.46 and 238,941

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Solution

The fourth proportional to 440,145, 607,407.46 and 238,941 is: 329,742.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,145 : 607,407.46 = 238,941 : x
  2. Step 2: Convert to fraction form
    440,145/607,407.46 = 238,941/x
  3. Step 3: Cross multiply
    440,145x = 607,407.46 × 238,941
  4. Step 4: Simplify right side
    440,145x = 145,134,545,899.86
  5. Step 5: Solve for x
    x = 145,134,545,899.86/440,145
  6. Step 6: Final answer
    x = 329,742.58

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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.