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Finding the Fourth Proportional to 289,612.59, 434,403.09 and 79,235.34

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Solution

The fourth proportional to 289,612.59, 434,403.09 and 79,235.34 is: 118,848.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,612.59 : 434,403.09 = 79,235.34 : x
  2. Step 2: Convert to fraction form
    289,612.59/434,403.09 = 79,235.34/x
  3. Step 3: Cross multiply
    289,612.59x = 434,403.09 × 79,235.34
  4. Step 4: Simplify right side
    289,612.59x = 34,420,076,533.20
  5. Step 5: Solve for x
    x = 34,420,076,533.20/289,612.59
  6. Step 6: Final answer
    x = 118,848.69

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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.