Home / 348,038.20-521,279.70-285,830.20

Finding the Fourth Proportional to 348,038.20, 521,279.70 and 285,830.20

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Solution

The fourth proportional to 348,038.20, 521,279.70 and 285,830.20 is: 428,106.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,038.20 : 521,279.70 = 285,830.20 : x
  2. Step 2: Convert to fraction form
    348,038.20/521,279.70 = 285,830.20/x
  3. Step 3: Cross multiply
    348,038.20x = 521,279.70 × 285,830.20
  4. Step 4: Simplify right side
    348,038.20x = 148,997,480,906.94
  5. Step 5: Solve for x
    x = 148,997,480,906.94/348,038.20
  6. Step 6: Final answer
    x = 428,106.69

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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.