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Finding the Fourth Proportional to 328,303.52, 492,676.88 and 128,599.14

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Solution

The fourth proportional to 328,303.52, 492,676.88 and 128,599.14 is: 192,985.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,303.52 : 492,676.88 = 128,599.14 : x
  2. Step 2: Convert to fraction form
    328,303.52/492,676.88 = 128,599.14/x
  3. Step 3: Cross multiply
    328,303.52x = 492,676.88 × 128,599.14
  4. Step 4: Simplify right side
    328,303.52x = 63,357,822,422.89
  5. Step 5: Solve for x
    x = 63,357,822,422.89/328,303.52
  6. Step 6: Final answer
    x = 192,985.51

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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.