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Finding the Fourth Proportional to 509,325.40, 763,113.30 and 242,511.40

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Solution

The fourth proportional to 509,325.40, 763,113.30 and 242,511.40 is: 363,350.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,325.40 : 763,113.30 = 242,511.40 : x
  2. Step 2: Convert to fraction form
    509,325.40/763,113.30 = 242,511.40/x
  3. Step 3: Cross multiply
    509,325.40x = 763,113.30 × 242,511.40
  4. Step 4: Simplify right side
    509,325.40x = 185,063,674,741.62
  5. Step 5: Solve for x
    x = 185,063,674,741.62/509,325.40
  6. Step 6: Final answer
    x = 363,350.57

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Double scale
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Similar ratio
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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.