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Finding the Fourth Proportional to 478,049.40, 717,074.10 and 145,582.20

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Solution

The fourth proportional to 478,049.40, 717,074.10 and 145,582.20 is: 218,373.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,049.40 : 717,074.10 = 145,582.20 : x
  2. Step 2: Convert to fraction form
    478,049.40/717,074.10 = 145,582.20/x
  3. Step 3: Cross multiply
    478,049.40x = 717,074.10 × 145,582.20
  4. Step 4: Simplify right side
    478,049.40x = 104,393,225,041.02
  5. Step 5: Solve for x
    x = 104,393,225,041.02/478,049.40
  6. Step 6: Final answer
    x = 218,373.30

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Similar ratio
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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.