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Finding the Fourth Proportional to 328,205.70, 492,308.55 and 216,036.90

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Solution

The fourth proportional to 328,205.70, 492,308.55 and 216,036.90 is: 324,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,205.70 : 492,308.55 = 216,036.90 : x
  2. Step 2: Convert to fraction form
    328,205.70/492,308.55 = 216,036.90/x
  3. Step 3: Cross multiply
    328,205.70x = 492,308.55 × 216,036.90
  4. Step 4: Simplify right side
    328,205.70x = 106,356,812,985.50
  5. Step 5: Solve for x
    x = 106,356,812,985.50/328,205.70
  6. Step 6: Final answer
    x = 324,055.35

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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.