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Finding the Fourth Proportional to 503,690.40, 755,617.62 and 148,740.30

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Solution

The fourth proportional to 503,690.40, 755,617.62 and 148,740.30 is: 223,134.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,690.40 : 755,617.62 = 148,740.30 : x
  2. Step 2: Convert to fraction form
    503,690.40/755,617.62 = 148,740.30/x
  3. Step 3: Cross multiply
    503,690.40x = 755,617.62 × 148,740.30
  4. Step 4: Simplify right side
    503,690.40x = 112,390,791,484.09
  5. Step 5: Solve for x
    x = 112,390,791,484.09/503,690.40
  6. Step 6: Final answer
    x = 223,134.67

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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.