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Finding the Fourth Proportional to 478,753.02, 718,235.10 and 141,820.20

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Solution

The fourth proportional to 478,753.02, 718,235.10 and 141,820.20 is: 212,761.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,753.02 : 718,235.10 = 141,820.20 : x
  2. Step 2: Convert to fraction form
    478,753.02/718,235.10 = 141,820.20/x
  3. Step 3: Cross multiply
    478,753.02x = 718,235.10 × 141,820.20
  4. Step 4: Simplify right side
    478,753.02x = 101,860,245,529.02
  5. Step 5: Solve for x
    x = 101,860,245,529.02/478,753.02
  6. Step 6: Final answer
    x = 212,761.57

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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.