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Finding the Fourth Proportional to 387,307.68, 581,020.68 and 197,664.72

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Solution

The fourth proportional to 387,307.68, 581,020.68 and 197,664.72 is: 296,527.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,307.68 : 581,020.68 = 197,664.72 : x
  2. Step 2: Convert to fraction form
    387,307.68/581,020.68 = 197,664.72/x
  3. Step 3: Cross multiply
    387,307.68x = 581,020.68 × 197,664.72
  4. Step 4: Simplify right side
    387,307.68x = 114,847,290,026.41
  5. Step 5: Solve for x
    x = 114,847,290,026.41/387,307.68
  6. Step 6: Final answer
    x = 296,527.27

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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.