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Finding the Fourth Proportional to 426,168.55, 588,333.71 and 311,318.24

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Solution

The fourth proportional to 426,168.55, 588,333.71 and 311,318.24 is: 429,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,168.55 : 588,333.71 = 311,318.24 : x
  2. Step 2: Convert to fraction form
    426,168.55/588,333.71 = 311,318.24/x
  3. Step 3: Cross multiply
    426,168.55x = 588,333.71 × 311,318.24
  4. Step 4: Simplify right side
    426,168.55x = 183,159,017,379.00
  5. Step 5: Solve for x
    x = 183,159,017,379.00/426,168.55
  6. Step 6: Final answer
    x = 429,780.70

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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.