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Finding the Fourth Proportional to 289,208.60, 433,812.90 and 147,053.60

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Solution

The fourth proportional to 289,208.60, 433,812.90 and 147,053.60 is: 220,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,208.60 : 433,812.90 = 147,053.60 : x
  2. Step 2: Convert to fraction form
    289,208.60/433,812.90 = 147,053.60/x
  3. Step 3: Cross multiply
    289,208.60x = 433,812.90 × 147,053.60
  4. Step 4: Simplify right side
    289,208.60x = 63,793,748,671.44
  5. Step 5: Solve for x
    x = 63,793,748,671.44/289,208.60
  6. Step 6: Final answer
    x = 220,580.40

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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.