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Finding the Fourth Proportional to 318,878.02, 478,317.03 and 277,820.74

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Solution

The fourth proportional to 318,878.02, 478,317.03 and 277,820.74 is: 416,731.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,878.02 : 478,317.03 = 277,820.74 : x
  2. Step 2: Convert to fraction form
    318,878.02/478,317.03 = 277,820.74/x
  3. Step 3: Cross multiply
    318,878.02x = 478,317.03 × 277,820.74
  4. Step 4: Simplify right side
    318,878.02x = 132,886,391,229.20
  5. Step 5: Solve for x
    x = 132,886,391,229.20/318,878.02
  6. Step 6: Final answer
    x = 416,731.11

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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.