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Finding the Fourth Proportional to 426,398.40, 588,431.52 and 232,806.72

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Solution

The fourth proportional to 426,398.40, 588,431.52 and 232,806.72 is: 321,274.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,398.40 : 588,431.52 = 232,806.72 : x
  2. Step 2: Convert to fraction form
    426,398.40/588,431.52 = 232,806.72/x
  3. Step 3: Cross multiply
    426,398.40x = 588,431.52 × 232,806.72
  4. Step 4: Simplify right side
    426,398.40x = 136,990,812,115.81
  5. Step 5: Solve for x
    x = 136,990,812,115.81/426,398.40
  6. Step 6: Final answer
    x = 321,274.22

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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.