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Finding the Fourth Proportional to 288,478.40, 432,717.60 and 164,062.40

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Solution

The fourth proportional to 288,478.40, 432,717.60 and 164,062.40 is: 246,093.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,478.40 : 432,717.60 = 164,062.40 : x
  2. Step 2: Convert to fraction form
    288,478.40/432,717.60 = 164,062.40/x
  3. Step 3: Cross multiply
    288,478.40x = 432,717.60 × 164,062.40
  4. Step 4: Simplify right side
    288,478.40x = 70,992,687,978.24
  5. Step 5: Solve for x
    x = 70,992,687,978.24/288,478.40
  6. Step 6: Final answer
    x = 246,093.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.