Home / 311,000,898.78-429,178,688.73-169,872,209.28

Finding the Fourth Proportional to 311,000,898.78, 429,178,688.73 and 169,872,209.28

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Solution

The fourth proportional to 311,000,898.78, 429,178,688.73 and 169,872,209.28 is: 234,422,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,000,898.78 : 429,178,688.73 = 169,872,209.28 : x
  2. Step 2: Convert to fraction form
    311,000,898.78/429,178,688.73 = 169,872,209.28/x
  3. Step 3: Cross multiply
    311,000,898.78x = 429,178,688.73 × 169,872,209.28
  4. Step 4: Simplify right side
    311,000,898.78x = 72,905,532,030,458,544
  5. Step 5: Solve for x
    x = 72,905,532,030,458,544/311,000,898.78
  6. Step 6: Final answer
    x = 234,422,255.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.