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Finding the Fourth Proportional to 353,444.10, 529,820.55 and 142,800.90

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Solution

The fourth proportional to 353,444.10, 529,820.55 and 142,800.90 is: 214,061.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,444.10 : 529,820.55 = 142,800.90 : x
  2. Step 2: Convert to fraction form
    353,444.10/529,820.55 = 142,800.90/x
  3. Step 3: Cross multiply
    353,444.10x = 529,820.55 × 142,800.90
  4. Step 4: Simplify right side
    353,444.10x = 75,658,851,378.50
  5. Step 5: Solve for x
    x = 75,658,851,378.50/353,444.10
  6. Step 6: Final answer
    x = 214,061.72

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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.