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Finding the Fourth Proportional to 427,728.81, 590,256.95 and 236,730.81

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Solution

The fourth proportional to 427,728.81, 590,256.95 and 236,730.81 is: 326,683.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,728.81 : 590,256.95 = 236,730.81 : x
  2. Step 2: Convert to fraction form
    427,728.81/590,256.95 = 236,730.81/x
  3. Step 3: Cross multiply
    427,728.81x = 590,256.95 × 236,730.81
  4. Step 4: Simplify right side
    427,728.81x = 139,732,004,697.98
  5. Step 5: Solve for x
    x = 139,732,004,697.98/427,728.81
  6. Step 6: Final answer
    x = 326,683.64

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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.