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Finding the Fourth Proportional to 459,704.60, 689,945.70 and 207,373.40

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Solution

The fourth proportional to 459,704.60, 689,945.70 and 207,373.40 is: 311,235.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,704.60 : 689,945.70 = 207,373.40 : x
  2. Step 2: Convert to fraction form
    459,704.60/689,945.70 = 207,373.40/x
  3. Step 3: Cross multiply
    459,704.60x = 689,945.70 × 207,373.40
  4. Step 4: Simplify right side
    459,704.60x = 143,076,385,624.38
  5. Step 5: Solve for x
    x = 143,076,385,624.38/459,704.60
  6. Step 6: Final answer
    x = 311,235.49

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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.