Home / 367,918.80-551,878.20-311,931.60

Finding the Fourth Proportional to 367,918.80, 551,878.20 and 311,931.60

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Solution

The fourth proportional to 367,918.80, 551,878.20 and 311,931.60 is: 467,897.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,918.80 : 551,878.20 = 311,931.60 : x
  2. Step 2: Convert to fraction form
    367,918.80/551,878.20 = 311,931.60/x
  3. Step 3: Cross multiply
    367,918.80x = 551,878.20 × 311,931.60
  4. Step 4: Simplify right side
    367,918.80x = 172,148,249,931.12
  5. Step 5: Solve for x
    x = 172,148,249,931.12/367,918.80
  6. Step 6: Final answer
    x = 467,897.40

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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.