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Finding the Fourth Proportional to 288,420.30, 432,630.45 and 122,186.70

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Solution

The fourth proportional to 288,420.30, 432,630.45 and 122,186.70 is: 183,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,420.30 : 432,630.45 = 122,186.70 : x
  2. Step 2: Convert to fraction form
    288,420.30/432,630.45 = 122,186.70/x
  3. Step 3: Cross multiply
    288,420.30x = 432,630.45 × 122,186.70
  4. Step 4: Simplify right side
    288,420.30x = 52,861,687,005.02
  5. Step 5: Solve for x
    x = 52,861,687,005.02/288,420.30
  6. Step 6: Final answer
    x = 183,280.05

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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.