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Finding the Fourth Proportional to 328,666.80, 492,854.40 and 151,228.20

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Solution

The fourth proportional to 328,666.80, 492,854.40 and 151,228.20 is: 226,775.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,666.80 : 492,854.40 = 151,228.20 : x
  2. Step 2: Convert to fraction form
    328,666.80/492,854.40 = 151,228.20/x
  3. Step 3: Cross multiply
    328,666.80x = 492,854.40 × 151,228.20
  4. Step 4: Simplify right side
    328,666.80x = 74,533,483,774.08
  5. Step 5: Solve for x
    x = 74,533,483,774.08/328,666.80
  6. Step 6: Final answer
    x = 226,775.21

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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.