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Finding the Fourth Proportional to 436,768.64, 655,152.74 and 121,225.46

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Solution

The fourth proportional to 436,768.64, 655,152.74 and 121,225.46 is: 181,838.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,768.64 : 655,152.74 = 121,225.46 : x
  2. Step 2: Convert to fraction form
    436,768.64/655,152.74 = 121,225.46/x
  3. Step 3: Cross multiply
    436,768.64x = 655,152.74 × 121,225.46
  4. Step 4: Simplify right side
    436,768.64x = 79,421,192,276.76
  5. Step 5: Solve for x
    x = 79,421,192,276.76/436,768.64
  6. Step 6: Final answer
    x = 181,838.13

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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.