Home / 318,856.20-478,284.30-219,323.40

Finding the Fourth Proportional to 318,856.20, 478,284.30 and 219,323.40

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Solution

The fourth proportional to 318,856.20, 478,284.30 and 219,323.40 is: 328,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,856.20 : 478,284.30 = 219,323.40 : x
  2. Step 2: Convert to fraction form
    318,856.20/478,284.30 = 219,323.40/x
  3. Step 3: Cross multiply
    318,856.20x = 478,284.30 × 219,323.40
  4. Step 4: Simplify right side
    318,856.20x = 104,898,938,842.62
  5. Step 5: Solve for x
    x = 104,898,938,842.62/318,856.20
  6. Step 6: Final answer
    x = 328,985.10

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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.