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Finding the Fourth Proportional to 288,003.20, 432,004.80 and 265,258.40

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Solution

The fourth proportional to 288,003.20, 432,004.80 and 265,258.40 is: 397,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,003.20 : 432,004.80 = 265,258.40 : x
  2. Step 2: Convert to fraction form
    288,003.20/432,004.80 = 265,258.40/x
  3. Step 3: Cross multiply
    288,003.20x = 432,004.80 × 265,258.40
  4. Step 4: Simplify right side
    288,003.20x = 114,592,902,040.32
  5. Step 5: Solve for x
    x = 114,592,902,040.32/288,003.20
  6. Step 6: Final answer
    x = 397,887.60

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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.