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Finding the Fourth Proportional to 427,419, 589,820.40 and 236,420.28

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Solution

The fourth proportional to 427,419, 589,820.40 and 236,420.28 is: 326,250.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,419 : 589,820.40 = 236,420.28 : x
  2. Step 2: Convert to fraction form
    427,419/589,820.40 = 236,420.28/x
  3. Step 3: Cross multiply
    427,419x = 589,820.40 × 236,420.28
  4. Step 4: Simplify right side
    427,419x = 139,445,504,117.71
  5. Step 5: Solve for x
    x = 139,445,504,117.71/427,419
  6. Step 6: Final answer
    x = 326,250.13

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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.