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Finding the Fourth Proportional to 288,003.10, 432,004.65 and 163,587.10

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Solution

The fourth proportional to 288,003.10, 432,004.65 and 163,587.10 is: 245,380.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,003.10 : 432,004.65 = 163,587.10 : x
  2. Step 2: Convert to fraction form
    288,003.10/432,004.65 = 163,587.10/x
  3. Step 3: Cross multiply
    288,003.10x = 432,004.65 × 163,587.10
  4. Step 4: Simplify right side
    288,003.10x = 70,670,387,880.02
  5. Step 5: Solve for x
    x = 70,670,387,880.02/288,003.10
  6. Step 6: Final answer
    x = 245,380.65

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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.