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Finding the Fourth Proportional to 289,000.80, 433,328.40 and 149,032.80

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Solution

The fourth proportional to 289,000.80, 433,328.40 and 149,032.80 is: 223,460.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,000.80 : 433,328.40 = 149,032.80 : x
  2. Step 2: Convert to fraction form
    289,000.80/433,328.40 = 149,032.80/x
  3. Step 3: Cross multiply
    289,000.80x = 433,328.40 × 149,032.80
  4. Step 4: Simplify right side
    289,000.80x = 64,580,144,771.52
  5. Step 5: Solve for x
    x = 64,580,144,771.52/289,000.80
  6. Step 6: Final answer
    x = 223,460.09

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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.