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Finding the Fourth Proportional to 359,279.20, 537,997.20 and 342,690.40

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Solution

The fourth proportional to 359,279.20, 537,997.20 and 342,690.40 is: 513,156.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,279.20 : 537,997.20 = 342,690.40 : x
  2. Step 2: Convert to fraction form
    359,279.20/537,997.20 = 342,690.40/x
  3. Step 3: Cross multiply
    359,279.20x = 537,997.20 × 342,690.40
  4. Step 4: Simplify right side
    359,279.20x = 184,366,475,666.88
  5. Step 5: Solve for x
    x = 184,366,475,666.88/359,279.20
  6. Step 6: Final answer
    x = 513,156.55

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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.