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Finding the Fourth Proportional to 387,152.62, 533,034.75 and 330,335.98

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Solution

The fourth proportional to 387,152.62, 533,034.75 and 330,335.98 is: 454,809.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,152.62 : 533,034.75 = 330,335.98 : x
  2. Step 2: Convert to fraction form
    387,152.62/533,034.75 = 330,335.98/x
  3. Step 3: Cross multiply
    387,152.62x = 533,034.75 × 330,335.98
  4. Step 4: Simplify right side
    387,152.62x = 176,080,556,515.31
  5. Step 5: Solve for x
    x = 176,080,556,515.31/387,152.62
  6. Step 6: Final answer
    x = 454,809.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.