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Finding the Fourth Proportional to 328,001.20, 492,001.80 and 117,611.80

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Solution

The fourth proportional to 328,001.20, 492,001.80 and 117,611.80 is: 176,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,001.20 : 492,001.80 = 117,611.80 : x
  2. Step 2: Convert to fraction form
    328,001.20/492,001.80 = 117,611.80/x
  3. Step 3: Cross multiply
    328,001.20x = 492,001.80 × 117,611.80
  4. Step 4: Simplify right side
    328,001.20x = 57,865,217,301.24
  5. Step 5: Solve for x
    x = 57,865,217,301.24/328,001.20
  6. Step 6: Final answer
    x = 176,417.70

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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.