Home / 311,000,900.28-429,178,690.80-169,872,210.78

Finding the Fourth Proportional to 311,000,900.28, 429,178,690.80 and 169,872,210.78

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Solution

The fourth proportional to 311,000,900.28, 429,178,690.80 and 169,872,210.78 is: 234,422,257.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,000,900.28 : 429,178,690.80 = 169,872,210.78 : x
  2. Step 2: Convert to fraction form
    311,000,900.28/429,178,690.80 = 169,872,210.78/x
  3. Step 3: Cross multiply
    311,000,900.28x = 429,178,690.80 × 169,872,210.78
  4. Step 4: Simplify right side
    311,000,900.28x = 72,905,533,025,862,048
  5. Step 5: Solve for x
    x = 72,905,533,025,862,048/311,000,900.28
  6. Step 6: Final answer
    x = 234,422,257.17

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1.5x scale

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.