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Finding the Fourth Proportional to 325,820.30, 488,730.45 and 286,454.30

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Solution

The fourth proportional to 325,820.30, 488,730.45 and 286,454.30 is: 429,681.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,820.30 : 488,730.45 = 286,454.30 : x
  2. Step 2: Convert to fraction form
    325,820.30/488,730.45 = 286,454.30/x
  3. Step 3: Cross multiply
    325,820.30x = 488,730.45 × 286,454.30
  4. Step 4: Simplify right side
    325,820.30x = 139,998,938,943.44
  5. Step 5: Solve for x
    x = 139,998,938,943.44/325,820.30
  6. Step 6: Final answer
    x = 429,681.45

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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.