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Finding the Fourth Proportional to 359,291.20, 538,015.20 and 342,702.40

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Solution

The fourth proportional to 359,291.20, 538,015.20 and 342,702.40 is: 513,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,291.20 : 538,015.20 = 342,702.40 : x
  2. Step 2: Convert to fraction form
    359,291.20/538,015.20 = 342,702.40/x
  3. Step 3: Cross multiply
    359,291.20x = 538,015.20 × 342,702.40
  4. Step 4: Simplify right side
    359,291.20x = 184,379,100,276.48
  5. Step 5: Solve for x
    x = 184,379,100,276.48/359,291.20
  6. Step 6: Final answer
    x = 513,174.55

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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.