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Finding the Fourth Proportional to 372,667.20, 559,000.80 and 347,006.40

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Solution

The fourth proportional to 372,667.20, 559,000.80 and 347,006.40 is: 520,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,667.20 : 559,000.80 = 347,006.40 : x
  2. Step 2: Convert to fraction form
    372,667.20/559,000.80 = 347,006.40/x
  3. Step 3: Cross multiply
    372,667.20x = 559,000.80 × 347,006.40
  4. Step 4: Simplify right side
    372,667.20x = 193,976,855,205.12
  5. Step 5: Solve for x
    x = 193,976,855,205.12/372,667.20
  6. Step 6: Final answer
    x = 520,509.60

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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.